Just like everyone is saying, TRY THEM ON. sorry, but it is so important that you get a boot that fits well. The FullTilt line is great, we have two riders that love them, but that being said. The boots dont come with foot beds which equals no support. The liners also need to be heat molded to your foot for the right fit. Which again is a reason to visit your local boot fitter/ski shop.
If you are trying to keep to under 500, I would look at the Nordica Double Six. Great boot for the money, its like the little bro of the AOS. Another boot to look at would be the Salomon Kreation. Just an over all solid boot for the money.
Hope this helps,