You're going to love the 660 .
The 700 feels nice and comfortable , but I'll give it a couple more years before upgrading .... the 660 is a proven winner and that's all that matters.
I will tell you this though because it will happen to you . With the 660 , if you play in the mud , make sure to clean your rad VERY good or you will overheat . The Grizzly is known to overheat very easily ( mine does it all the time) . The rad may look clean , but it will be packed with dirt ( if you play in the swamps) and the side covers don't allow very much air to access the motor so it heats up.
Other than that , you're going to love the Grizzly ... no other major problems to report.
Oh ya ... I forgot to mention ... be prepared to be the first to cross mudholes . It seems when you're riding , they always send the guys with the Grizzlys through the mudholes first . I guess they know that if a Grizz can't do it , there's no chance in hell that any of the others can !!!
2004 Yamaha Grizzly 660 .... Loaded !!!!
Working Together Towards A Common Goal --- Quitting Time !!
http://www.youtube.com/watch?v=Yx75Zoa_kVw&feature=related