As said above, you certainly dont need Full Tilts for park. They may be the best boot for you but they also may be the worst.
In general try to find a good bootfitter who can offer custom bootfitting. What this means is they should be able to offer custom footbeds, custom shell work, liner modifications and boot alignment.
In general I think Sidas make by far the best custom footbeds. You can do more with a sidas then any other brand. Look for a shop which offers custom fitting using Sidas products if you can. Sidas also make foam injection liners, however these days foam injection liners are not really needed by the majority of skiers. The stock liners are great now but having a shop who can offer different liners will be a bonus.
If you have any questions about what you should look for or what to expect when you get fitted let me know.
