I have the Yaesu FT-2200--the 2800's little cousin. It's not mil-spec, but it's been choking on dust and bouncing around in the 4x for 6-7 years without a problem. I didn't realize the 2800's were so cheap now. I haven't seen any mags or catalogs in a few years--I'm a little out of the loop. Yaesu also has some tiny mobile rigs out now if you want something smaller. The 2800 is a fairly "substantial" radio.
**EDIT...sorry, I was picturing the FT-2500M. Just saw the FT-2800 on the HRO site...wow! That looks like a great radio at an amazing price. I'm sure it'd be hard to go wrong with that. That's less than I paid for my used FT-2200.
For an antenna, I use a very simple 1/4 wave mag-mount stuck to the fairing below the windshield. Some say it's mag-mounts aren't a good permanant solution, but it's been working great for years. I think it was about $15.
LARCFEST is coming up....April 5th I believe...Boulder County Fairgrounds in Longmont. That's a great place to see a lot of gear and find bargains.
Eric/KG0YS