Hi, I just joined. While I cut grass during the summers in my teens, I'm now 46. I am shopping for a 24-inch walk-behind mower, commercial-grade, to cul my 0.9-acre lawn. Since 1997 I've been using a 21-inch hi-wheel Scotts with a 6.5 hp Intek Edge engine. The Scotts is a superb bagger (as reported in Consumer Reports that year). But it's only OK as a mulcher. Of course, I'm using the stock blade, which is probably high-lift, designed for bagging. My Scotts is not self-propelled. It takes me about 3 hours to cut my grass, but I don't mind; the lawn is flat, and I actually welcome the three hours of exercise. For this reason, I do NOT want self-propelled, though I'd consider it provided the drive would not add friction when I push. The problem is, my yard is full of gopher holes and depressions. The Scotts' wheels are consumer-grade, and every year since 1998 or 1999, my local shop has had to replace a wheel, replace a wheel attachment part, or actually weld a part back onto the deck where the wheel attaches. I'd like to keep the Scotts for those times when I must bag (because I've waited too long to mulch). But I need an industrial-strength mower for my week-in, week-out mulching. Because of all the holes and soft soil (where I can actually feel my foot sink), high wheels are a must. I've researched for a month and have narrowed my choices to Sarlo M624I-C or simply 624,(http://www.sarlomower.com/highwh.htm), Kee KC-24 Classic (http://www.keemowers.com/steelDeckMowers.cfm , and Johnson Big Wheel, now made by Mackissic (http://www.mackissic.com/JohnsonBigWheel.htm). A dealer who sells both Sarlo and Kee feels that the Sarlo is slightly more durable, in that the wheels attach to the frame, whereas on the Kee they attach to the deck. He also had high praise for the Sarlo's "perfect circle" deck, a feature he wasn't certain was shared by the Kee Classic. The Sarlo 624 is so durable, the Florida Department of Corrections bought 1900 of them. The Johnson may be the best built of all, and, unlike the Sarlo, even has a blade clutch. But I was nervous about the small 6-inch wheels; won't they dig into my soft soil as I push? The Kee's big appeal is that, of the three, it's the only 24 available with an 8 hp engine (Briggs I/C). In fact, it may be 8.5 hp; I can't get Kee to answer my email, in which I ask them to clarify the apparently two versions of the specs. Johnson will sell me the 24 push version directly for about $900 shipped, with mulching kit. (I don't live near a dealer for any of thes brands, but my local repair guy can fix anything; he just needs the parts.) As I understand the Mackissic brochure, however, the 24-inch models come with 16-inch weels; the 20-inch wheels are reserved for the 26-inch models. On the Sarlo and Kee mowers, even the 24-inchers have 20-inch wheels. The Sarlo is available for $800 shipped, plus $40 for the mulching plate, from http://www.tropicallawnmowers.com/lawnmowers.html . (They list the SP self-propelled version at that price but confirmed that it's the price for the push version; I think they said the self-propelled is the same $800 shipped, which would be incredible.) The Kee is about $784 shipped with the 8 or 8.5 hp engine and mulching kit at , sold at http://www.wikco.com/Keemower.html . The Kee was a no-brainer till I learned that, just this month, Sarlo replaced the 624's 6 hp I-C engine with a 6.75 Intek Pro (or Intek I-C). Would the Kee's more powerful engine let me mulch when the grass is a bit taller or a bit wetter? Or is a 6.75 Intek Pro sufficiently close to an 8 or 8.5 hp engine that I wouldn't notice a difference? Or would the Sarlo's "perfect circle" deck make it a more capable mulcher, no matter what? Would a Gator Mulcher blade made any of these such capable mulchers that any power differences wouldn't matter? To compare power, would I have to know how conservatively the manufacturer has limited the rpm? The Ariens 21 commercial model, for example, uses an Intek Pro 6.75 hp engine but the manual (online) says that rpm is limited to, as recall, 2900 rpm. That's well below the 85% maximum that Briggs recommends. Weightwise, the Sarlo weighs about 111 lb, the Johnson, 135, the Kee--well, I've seen 135 and 165. I'd trust 165 for the 8 hp engine. How heavy a mower can someone actually push on flat ground (like mine)? I'm counting on those big wheels to help me out. I'm tempted to go to a 26-incher, where the Kees Classic is available with a 9.5 hp I-C engine (10.5 hp on the Kee aluminum model!). And if I can get the Sarlo self propelled for the same price as the push version, should I go for it? I was afraid that the 7-inch swivel wheels might prove less able to handle the depressions. Well, that's enough. Feedback is welcome.