Hey all you guys out there, i'm in the process of building a new walk behind mower. I have a very extensive manufacturing background, so that part is not a problem..... I just cannot find a mower that will do what we want it to do. Everything else is to big and bulky and is a side bagger, I want a rear bagger. So here goes. 1. What is better do you think, a single spindle 30" deck or a 2 spindle deck? The 2 spindle deck would be both rotating to the center and discharging to the rear. I already have the timed drive system figured out. My plan is to use 2 blades on the 30" deck and 4 blades on the 2 spindle deck (2 on each spindle). This should mulch really well. Might even try 3 blades (6 cutting edges on the 30" and 12 on the 2 spindle deck). 2. The 2 spindle deck will be more compact at it is only 18 inches wide front to back, where as the 30" deck is 30" front to back. 3. Both decks will have swivel wheels in front. 4. Both deck will be hydrostatic drive, but with a differential, so we don't need 2 axle drive pumps and motors. Just steer it kind like a car, as the rear wheel will slip to the direction your are going. 5. I am planning on setting this up like the toro personal pace mowers we use in our operation. You just push on the handle and it goes forward, you stop pushing and the mower stops, but I will add a reverse. You pull back on the handle and it will back up. If you need to go a little slow, just push a little, you want to go fast, just push harder. 6. It will have a blade clutch on both. 7. I am looking at putting a 13 hp engine at least, but might go up to a 16 hp so as not have to slow down in wet or taller grass. 8. Will have a bag like the 26" ex-mark that just came on the market this last year. Any idea's? Any helpful criticisms? Thanx a lot!!!