Ski boots aren't street shoes, you can't just try them on and get the ones that feel good. Well fitting boots feel tight as hell at the shop and to get a boot that's tight enough to perform well and not pack out but not be uncomfortable it needs to fit your foot shape pretty much exactly. Thats why everyone recommends going to a good boot fitter and having him/ her help you choose the boot, because its not something you can really do yourself.
When you go to get fitted don't tell the boot fitter you're looking at full tilts because there's a good chance he'll sell them or a similar boot to you to make the easy sale. It may not be the color and style you want but this is skiing, not a fashion show and your boots are your most important piece of gear.
Here's a tip: instead of wearing an avalanche beacon just put a dog treat in your jacket.
That way, when the search and rescue dogs find your body, they can have a little treat.
Leave no turn unstoned.