We're very happy with our 2006 Safari Cheetah. We've had it more than two years and have been full-timing for the last year and a bit. The floor plan works very well for us. I like the size and quality of the technical systems (water tanks, propane tank, AC/heat pumps, inverter, power management system, leveling jacks, Onan 8k, etc). We like the quality of the finish-out, inside and out. Our coach is built on the RR4R chassis so I had to change the trailing arms to the Source Engineering ones after I bought the coach used in 2010. My experience with my RR4R chassis after ~15K miles of driving is that it's been very easy to drive and has no wandering, handling or bouncing issues (many threads here discuss these handling issues at length).
Hope this helps. Good luck with your decision.
2006 Safari Cheetah 40PBQ, 350 HP Cat C7, Roadmaster RR4R, Allison 3000MH
2007 Subaru Forester on a light car hauler