It's down to personal preference. I had an SV2 and liked it, I had a DEX210 and thought it was s**t but thats mostly down to the way I drive probably. One car might be good for one person and not another.
We were at Maritime Raceway the weekend for the two day off road wars world cup and there were some of the best drivers in Europe there. Now I believe out of the top 10 A finalists there were two SV2's (Tom Cockerill and Lloyd Storey) so they can't be that bad.
One thing the DEX210 has over the SV2 is spares prices, if you crash a lot then the 210 will be cheaper for you. Other 2wd cars to think of are.......
- Yokomo B-Max 2 MR
- Kyosho RB6
- Team C TM2
- Associated C4.1
Any of the above in the right hands are great cars (and in the wrong hands good cars
).