It's funny to read your post because it is almost identical to the dilemma we are are currently in
.
We have an road Dove & want to upgrade to an off road van, but cant decide if we should stick with the same style of van & go with an OB Dove or a expanda style van, I'm personally leaning towards the Windsor Rapid or Coromal Transforma.
We love Dove because of the internal layout & bench space, plus the small rear over hang compared to the other wind up models, & I think are more suitable off roading than the expanda style vans. The main thing that annoys me about the wind up vans is for our style of holidaying we are normally only stay in each location for 3 or 4 nights & do this multiple times in on holiday, plus the winding up of the bed flys/awnings, poles, ropes, pegs & the packing up of the main awning etc gets frustrating, if we only ever wound the van up & pulled out the beds with no awnings it would be quite acceptable & very quick pack up.
OB Dove Pros; small compact size, great off road, no wind drag, light weight
OB Dove cons; A full set up with all awnings ropes & poles etc is slow to pack up, for short stops.
The main issue i'm having with the expanda style vans is the bed access, most only have a small access to the beds & usually in the middle of the bed, this means if you sleep over the back & get in last you have to climb over the waist of your partner to get into bed, but that van you have chosen looks great for that problem. while I would like a capable off road van like the OB Dove could give me, realistically we wouldn't push it that hard & much more than a bit of corrugation or rough dirt roads like national parks & forestry roads, of which the expanda style would cope quite fine.
For me it comes down to the style of camping your most likely to be doing, & for us to get a wind up the main benefits would be for camping that we only do 1% of the time, but the small size is a big plus for storage & towing.