I'm not at all keen on that bike, although, I admit I have never ridden. I do know that it is an old design, and does not pedal very efficiently, because the rear suspension bobs. Trek does not put a very impressive parts package on it either. For the money, you would be better off to get a hardtail like the 4500 or 4900. You might be surprised how much you can do on one if you focus on being smooth. Plus a hardtail will be noticeable easy to pedal uphill and on long rides than the Y-26. Giant and Specialized also offer similar bikes.

If you really do think that full-suspension is what you need, you should consider spending more and getting a more efficient and modern design. Probably the least expensive decent such bike is the Jamis Dakar. Most other companies' decent full suspension option start at around $1000, so $300 more than the entry level Jamis. The fork and drivetrain may not be quite as nice, but it's a decent frame design.