mxbundy,
My trailer is a '00 Patio Hauler 351F - it has a living room/dinette slide out. I paid $22k for it in June '01. The 320F is the same floor plan w/o slide out. The slide out makes huge difference in livability - adds ~2000lbs to the dry weight of the trailer. Listed dry wt on my trailer is 10,400lbs & GVW is 14,100lbs. My trailer has 16" 8 lug wheels with E rated tires. Frame is 12" I-beam. I tow it with a '00 Dodge 2500 4wd Cummins diesel/6spd stick. The only time I weighed the combo was on the way to Elkins Flat in October and I was at 21,300lb - truck is rated for 20k GCVW. Oops. I'm averaging 10mpg towing. I don't think you'll be real happy towing a 10k trailer with the V-10.
Check
http://kitmfg.com/rv_features.asp?rvID=122&rv_name=351F for the details.
If you have kids/plan on throwing as many people as possible in the trailer get an open floor plan like the Thor/Tahoe. We spent 4 days at Dove Springs over New Years and the majority of the socializing was in our friends 34' TailGator 5th wheel (nice trailer BTW - alum frame & has basement storage). The facing couches and open area in the back make for a good gathering area. Our trailer, separate patio & slide out, works better for a few people but not 'movie night' like the open floor plan. We have a couch, dinette & recliner but it's just not a 'party' set-up.
I wouldn't pay the premium for a built in generator. My trailer didn't come with one (it's got all the wiring) so I bought a Honda EU3000 - ~$1650.00. The Honda is extremely quiet and I can use it anywhere. I've got plenty of space to carry it. I use the gen compartment for my toolbox.
Get a hitch with as much angulation as possible - you'll be towing the trailer on some pretty bad roads. The 20K has the most angulation in the Reese product line. The mounting rails make for nice footpeg tie down pts when bikes are in the back of the truck:)
Something else to watch - loading these things can be iffy. The bikes all go in the back - behind the axles for the most part. This makes the pin wt pretty light. I have to fill my fresh water tank in order to get enough pin wt for good towing.
Regarding the prices: Again, I have heard bad things about Forest River and it looks like the pricing reflects the quality/reliability comments that I have heard. The differnce in price and wt between FR & Thor makes me wonder if FR is under built or Thor is over built. Guess which one I'd bet on?
Check with Big Bird about the 30' Thor/Tahoe - he has one.
Hope this helps,
Brian