I had the B&Es for a few seasons and they were OK. they were awesome at first, but they buckles ended up breaking (fuck plastic buckles and $30 replacement buckles) and I had to buy a lot of pieces to make them fit comfortably as I got used to them/became more of an aggressive skier. I'd be curious to try the new TWalls, though, as it looks like they are constructed a lot better than the boots I have. if you do get full tilts, get the high end pro models with metal buckles and replaceable soles, not the classics or the cheap shit. I have dalbello il morros now and they are fantastic. they are similar in design to full tilts but are much better IMO. don't be afraid to check out other brands, and don't be fooled into buying full tilts because of the style- it'll bite you in the ass.
but seriously, go to a boot fitter.