Thanks for the info mtmower. I agree, I could do what I need to with a lot less mower, but I want whatever I get to last a long time. Unless I get a really good deal on a new one, I plan to buy used with low hours, so that limits me on my selection, and it also closes down the price gap between the levels. The dealer I went to yesterday had the 700 series and 900 series/Super Z priced roughly $1k apart. At that point I would rather pay a little more and get the 930 or Super Z.
It sounds like the rear discharge would not be a deal breaker for me. I have no plans to bag, and if I can mulch great, if I can't it isn't a huge deal.
I will definitely look at the Gravely dealer this week. It is also the JD dealer where I have been getting my parts and Stihl stuff, so the already know me there. Unfortunately they have a very small selection of mowers in stock. I do want to drive a Gravely before I make a final decision.