The one's that fit your foot. Seriously, that is the number one thing. Vans, Salomon, Nitro, even Burton (reluctant to recommend them but they do make some good boots, not all), all make good boots. Vans probably being my company of choice, but they fit my foot properly. If Vans don't fit your foot, well they suck for you. I would go into your local shop and try on a bunch of different boots. Speed lace systems are nice (such as BOA) but not necessary. Just make sure you don't buy a price point boot. Get a pair that is meant to last. Being that you are a beginner, a boot that is made for solid intermediate riding is where I would look. You're going to get out of the beginner stage quickly so no point is buying a low end boot that you will quickly outgrow.