Iv had one of each of the style you are asking about and that you are looking at. we had one of the earlier modcons the aussie built versions and it was awesome and highly recommend. I you can find the right one they actually come with webasto diesel hot water and interior heater wich ours had. another to consider is for a bit of change left in the pocket the camper called ECOMATE, was modcons 1st foray into getting campers built in china to their design, not the mass produced change the paint and stickers and call it their own version you see now with just about every other manufacturer.
These ecomates were from 14 onwards an also came under the badge SUV, as somewhere the company split with the same version of camper. our 14 eco mate is pretty much identical to the ausie built just not as refined. We took the 1st modcon to cape and back no issues, while 2 of the other china branded campers had a few issues and the 17 model suv that was with us was fine. we even swapped the doors over and they fitted perfectly to see if there were any real differences.(also the modcons eco,suv have the seperate door to the steps so your not folding dust and crap into the camper at pack up time, and also your just that bit extra protected from things getting about outside, like the wild dogs we heard howling the 1st night of one of our trips).
the year after we sold that and bought a basically brand new ecomate and other than replacing the shocks after the 1st trip at easter had no issues on a 10k plus trip to uluru via camerons corner, oodnattat track etc. On that trip we had a virtually brand new stoneycreek ff6 and it had many issues along with others we saw along the way awaiting parts etc as the wheel fell of on one, and also my mates lost a bolt and another was loose so he almost lost a wheel too. by end of the trip only 1 shock was working and one water tank was holed and leaking amongst other things. Ffolds are great for setting up in the same space and you are way up off the ground, but seeing the size of your family unless you get a rear slide version may be a bit small.
the rear folds are great and often come in longer base so have larger area on the floor to fit more people specially in the cab range.
we had a cub spacevan and the floor space was huge, could easily accommodate bunks and the likes, before that we had an aussie swag as well, when the kids were real young, so they are a bit tighter on space. only down side is they need that extra room behind to set up and also some are difficult to get the floor level with the supplied adjustable legs, we found we need some bits of timber to cater for the odd hole in the ground to make the floor sturdy and lastly we also had a jayco outback dove. it was brilliant for living wise etc and would fit the number your chasing. we sold that to go the ffolds to do the cape trip. i didnt really think it was going to cut it on the sort of roads the cape has and or keep the dust out, wich as we found out talking to other owners was a constant daily struggle at set up, was to clean the thing, no matter what they did to try and seal it up. so depending on what your going to do will depend on wich might be suitable.
any way hope that helps with some ideas.