I don't own a X65F, but I have used one. Personally, I didn't like it. I DO own a X-52 and X-52 PRO, and neither is well made, both have had problems with bad connections inside, spiking, not holding calibration, etc. so unless the quality of the X65F is head and shoulders above Siateks other products....I still think the quality is much better in the Warthog.
And to me....the switches on the Warthog feel much, much more durable than anything Saitek has ever made....I have no idea how you could feel they are flimsy on the Warthog.