I'm currently bidding on a few lawns that will require using an intermediate walkbehind. I currently have a somewhat new (1996) 48" SCAG belt drive with a less than stellar performing 14hp Kawi. It is fine for what I currently use it for (approx 3-4 hrs/week). However, with these new accounts, I will be at least doubling and maybe coming close to 12 hrs per week on it. I want Hydro this time around. I want a FIXED deck. (Cut height is ALWAYS at 3.5") And weight needs to be as light as possible. I want a compact machine. Currently, my SCAG is 69" from pistol grip tip end to the front edge of the caster tire. And I want POWER. Lots of it. 15hp on your 48" Viking is simply NOT enough. I've demoed several brands of 15hp Kawi 48" BELT drives and they were underpowered, add to that, driving a hydro, and possibly a mulch kit,.... just not going to fly for me. Currently the new SCAG SWZ 48" Hydro with the 18hp Honda looks like what I'm going to have to go with. It has features that I'm used to.....(Electric PTO clutch, pistol grips-I like them!-, same size blades, real hourmeter, etc.) Plus, most importantly, the power jump! 3 more hp and almost 8 more peak ft/lbs of torque (5 more @ 3600 rpm). So, unless I see a 17 or more hp 48" Viking in the eXmark pipeline, I'm going to have to stick with SCAG for my walkbehind preference.