Newdeal,
I still consider myself "challenged" when it comes to all things tractor. So take what I say with a grain of salt...
I have a BX2660 and LOVE it. However, on the surface it sounds like the 2360 would more than meet your needs.
When you say you're using it mostly for mowing, are you mowing 1 acre, or 6 acres? The difference in time required between the 54" and 60" decks would pay off at some point, if you have lots of mowing.
The difference in seats isn't worth $800 to me, but I don't use my tractor for mowing. If I were going to spend two or thee hours a week mowing over ten years, I might give it a little more weight.
Also, the debate continues, but I'm also a big believer in the box blade. I am still very much the novice, but BB work has a fast learning curve. Love it.
One of the big reasons I went with the 2660's extra power is that we have hilly terrain and I new there'd be plenty of times I'd be going up and down, clearing trails, hauling logs, etc. As a matter of fact, these pics show what I was doing yesterday...
I can vouch for the 2660 being more than a match for anything I've thrown at it...BB work, brush cutting stuff that was way taller than the tractor, FEL work (which I knew I would do, but was surprised by just HOW MUCH FEL work I've come up with). Not trying to sell you on a 2660, just the reasons I chose one.
One other thing that helped push me to the 2660 was that some of the lower numbered BX's had a problem with "abrupt stopping". Kind of annoying. I did test drive a smaller BX at the time that had that problem. Don't know if that problem has been addressed by Kubota, yet.