I had hard time with boot fitment when starting out. I often had to make adjustment as I was learning, just because I was curious to try different tightness.
I started out with a K2 Maysis that I borrowed from a friend. I liked it it. The second year, I got my own, traditional lace and I didn't like it. For whatever reason while riding and falling I wanted to adjust my boots and that was a pain on the slope because I was tired from falling.
The 3rd season I got a single BOA and it was good. I got rid of it last season and got the K2 Maysis with the true double BOA that adjust internal and external. can't wait to be back on the slope again.
I highly recommend the K2 Maysis boots. The material used is very comfy.