Hi John -
I have the 2305 with the 62C and the 47" 2-stage blower. I looked at the material collection system for the 2305 and wasn't thrilled by the prospect of emptying the bags by hand - they can get heavy and are unwieldy.
I bought a lightly used MC519 and powerflow unit from a local implement dealer. I had a local machinist weld me up a support hitch for the MC519 and I hooked it up via 3-pt.
This works really, really slick as the MC519 is a lever-dump unit plus I can raise it all the way up and build on the pile of clippings/leaves easily. The cart and powerflow (both used) cost me $700 plus $200 for materials and labor to build the hitch/frame. I believe the powerflow alone is ~$500 new for this unit. Let me know if you want to see some pictures of my setup.
I *am* impressed with the 2305 and would not trade it for a 4xx series or a X7xx series. It mows beautifully, tons of power, 4wd, 3 point, etc. I don't mind the ride one bit - plenty comfortable for me when I compare the the JD 425's I used growing up. 62C deck is the same as used on the lower models - works great and gives a nice, smooth cut.
Given, the 3 point is a limited cat 1; the "limit" is simply due to the lift height available. Not a problem for most folks and most implements made for sub-CUTs.
Snowblower is noisy but works well - I use it here in MN and I can chew through anything - just take the big piles slow and you're fine. I've used it through 2 winters and broke 1 shear pin due to hitting a frozen sunday paper by the neighbor's mailbox. Up and running again 5 minutes later.
If it were my and my dollars being spent, I'd go with the 2305. Good luck with your decision!
Scott