I'm working on getting my certification right now? I haven't bought any equipement yet but the first things i want to get are boots and then fins. The main reason for that is that ones that we are renting aren't very comfortable, are really worn out and it just doesn't feel sanitary wearing them. Also i'm looking for something good but not really expensive? What name brands are good to get? (I'm pretty sure i'm going to want cold water boots, i have no body heat)