No substitute for actually getting to a shop, or 2, where you can get your hands on them. Many are heavy, unwieldy things, miserable to handle. Handle a few and you will quickly be able to figure this out for yourself.
Price does not necessarily indicate "better."
That said, be sure to take a look at the Barnett Recruit, the model with cams, not the recurve. It's small size makes it very nice to handle, its pretty fast, easy to shoot well, and is low maintenance. This provides a good starting point to determine if xbows that are 2 or 3 times more expensive are delivering 2 or 3 more times....performance? handling? speed?