Hi Greg,
We got a new 2013 dove outback with the simplicity suspension. I think it is great, the clearance it gives and extra height gained is fantastic. It tows great on the road and although I haven't taken it all that far off the beaten track just yet, one feels it will be a good thing. I thnk it is a worth while mod if you plan to do a bit of offroad travel.
The canvas flaps are ok, I just use the roof safety poles to Velcro the bits out of arms reach.
The fiama awning will no doubt be easier to setup /pack up but might be a bit weaker in heavy wind. I havent got an awning yet but will be getting the aussie traveler coolabah when I can save up enough coin. They are about $1800 supplied and fitted, so not cheap but seem to be the easiest and strongest one on the market. I'm not sure how long it takes to attach the walls but if you go on to you tube there is a vidio of the coolabah awning and walls being setup, I think it takes roughly ten minuts for the guy to set it up by himself.