I have ridden the normal Bombardier DS 650, the Raptor and a 400EX. The 650 is my favorite just because it is slightly bigger in every dimension (but also heavier), but since Im 6' 5" and 235 pounds, its my favorite. I debated these 3 quad's aspects and characteristics with Cain Smead at the Baja 2000. Cain writes for Dirt Wheels mag which is a Hi Torque Publication and he also rode a Raptor at the Baja 2000 to 2nd or 3rd place in the ATV Pro class. Basically all 3 have their advantages, it just depends on what your needs are. A 400EX is light and great out at the dunes. The Raptor has a screaming motor also has reverse, but it cost more. The DS 650, is a quad I considered buying and using to prerun with down in Baja, but I ended getting an XR400 bike instead so I can carry another bike of a team mates in my truck. Besides liking the DS 650 because of it size and extra wheel travel, I felt it was just going to be more reliable. It has a 530 chain which is about 40% stronger than the 520 chains on the Raptor and 400EX. Granted you can upgrade any quad, but things like that are just more noticeable on the DS650. Also the seat extends all the way forward for when your not standing up, so your knees have a nice cushion to hug for comfort. The wider track also makes it a bit more stable at high speeds. Just my thoughts from my experience...