Never used the fusion exceeds, although likewise considered one a while back - if you search on here, you'll find a couple of threads where ooplers are asking about them, seems like a small handfull do use them and find them to be good.
To be honest tho, of you're looking to spend that sort of money for a set up it's worth trawling the for sale section on here as you will more than likely find a better set up for that price - both my novak havocs with 10.5 ss pro motors came from fellow ooplers, 1st one for 75 quid and the second more recently for 57quid including postage.
If you have a gander in the what ooplers use car/electrics thread there's quite a few examples now of what people use in 2wd
