Full.Monte is right, but you've gotten on one of the best RV forums around. We're relatively new to this mh rv'ing ourselves, having gone from 12 years of tent camping to purchasing our 2005 National Dolphin in Dec 2010. I gotta say though, I have learned so much from this forum and the good folks on it.
I'm sure you'll get a lot of responses.
One thing that comes to mind is, you mentioned you'll be full timing in a few years. If it were me getting ready to full time, I think the first thing I'd consider would be, whether full timing was going to be a lot of miles over the road or something else, like maybe camp hosting or work camping. If I were going to be doing a lot of road miles I'd chose a dp versus a gasser. They're generally better suited to high mileage traveling.
As far as Ford V10 versus other. We chose our NRV Dolphin over a same size and very similarly equipped NRV Sea Breeze because of the Chevy 8.1L V8 and Workhorse chassis. At least for 05, it had more displacment in cubic inches, more HP and Torque and made both of them at a lower RPM than the 05 Ford V10. From what I understand the V10's now have 3 valves per cylinder and make more hp. Not sure about the torque. I still think the V10's are a bit more rev happy engines.
Not sure how helpful my feedback may have been, but I wish you the best of luck in your search.