I would go for the Durango DEX210 every time. After trying one out at a regional this summer I got one myself. A friend of mine and ex development driver (this was some years ago lol) says its the best 2wd he has ever driven and he has so much experience!
Another mate of mine who is a Schumacher team driver (racers mainly at Worksop due to summer working commitments, to add regular worksop A finalist) loved the Cougar SV but says the SV2 just doesnt compete and that it isnt good at all, so much so he says he is going to try and get away with running the SV this winter. Obviously I cant name names but he isnt the first person to say this.
So from what I know the 210 is the better package, works pretty much kit standard set up, few tweaks here and there but comes with everything in the kit to make changes to it. The argument about the cars being weak doesnt stack up either because from a personal prospective and from mates the car is very rigid. As for the SV2 for me Schumacher parts quality is some way behind the rest, I think the parts wear out far too easily and some of the plastic bits can break quite easily. But the machined alloy parts that wear for example the outdrives and driveshafts are really not cheap to replace. This is from my experience of running the SV. But the SV was a great car to drive though and was fast around worksop.
So if you wanted to go for schumacher the SV is the best bet around Worksop. People may say look at top drivers ect they do okay with the SV2 but the truth is their cars are nothing like the originals with so many development parts on, they dont compare.
But if you wanted a current model it has to be the Durango. For the price, kit quality and kit set up being so quick out the box, you can't go wrong