I always cringe when I read the "smaller" comments. The 4400 and the 4x10 series tractors are very hard working machines. I'm sure there are specific differences in specs and size, but believe me, you'd be amazed with what I've done with my "small" 4310. I quote that because of the comments my neighbor made when I got it. Seriously, when I bought the tractor back in February my neighbor admitted recently that he thought I had spent a large sum of $$ on a glorified garden tractor. Keep in mind he has an 18000lb beast of a TLB. It just isn't the case, I've performed some serious work with my machine, including moving rocks that are incredibly heavy (I got good at flipping instead of picking them up /forums/images/graemlins/grin.gif).
I re-read your post - it's not your imagination. There are CUTS in several sizes. I easily could have gone for a Kioti in the DK40 range, or the large Chassis Deere. I looked at the Grand L series line from Bota as well. The bottom line for me lead me to the mid chassis size as the best overall fit. I'm almost done with my earth moving and reshaping chores. Soon I'll be settling into doing mundane tractor stuff like mowing and box blading (yeah!!!) - that is until we move to our other lot... then more stumping... more rock moving...more earth moving... (Yeah!!!).
They are all hard working tools that allow us to do jobs we'd need a lifetime to accomplish by hand. Don't get me wrong, I'm not saying the 4400 is the right tractor for you - just consider your needs and be realistic. I've read it here several times worded a number of ways... but I think we all get the "Tim the Toolman Taylor" thing going when we look at these things... "more power". /forums/images/graemlins/grin.gif
Good Luck - I'm sure you'll arrive at what is right for you.