I too am looking for a MX/Woods bike, KTM is my first choice, but the new Husqvarna's are looking good, I'm concentrating on the 400s. The MXC has the larger tank and gearing for woods but the suspension is a bit light for the MX that I would be riding. The SX is the opposite in those areas and the price is considerably less. This would be easily converted to a larger tank and more woods friendly gearing, which on a 4 stroke I probably won't even bother with. I haven't read to much on the Husky's but don't plan on making my purchase until later this year and will have read a few tests by then!
Mdkuder
2000 Suzuki DRZ400s
1998 KTM 125SX