If you're leaving in two weeks all I can suggest is going to a store ASAP and trying on anything from the trusted brands, making sure it fits well and use it as often as possible for the next week and give your feet a rest (if needed) during the second week. If it fits you well (which is the single most important factor - not brand) it shouldn't need breaking in but its better to be safe than sorry. It's best to try on new boots in the afternoon after your feet have swelled. I find using two pairs of socks and getting something slightly tight works well for me, but use your judgement. Whatever you find, walk round in the store for 10 minutes.
Good luck
Chris