i'm looking at buy my first regulated mod and am torn between these two. the smok is about $10 less than the ipv and is bigger plus you get the extra 10watts. i like the ipv because it's smaller&will fit in my hand better(i have trouble w/my hands hurting) plus there are tons of wrap/case options with it. also which is better, internal battery or removable ones. i'd like to hear from people who have one of or both of these. what are the pros&cons of each? i've watched reviews but would still like to hear from others before i spend $50-$60