I bought the mpv 2 and love it. Now my son wants one. He's bought a few of the slim type vapes and he wants an Itaste like I have. Is there a big difference with the new 3 model? I'm going to buy him one but the mpv 2 is $38 and the new 3 is $63. Is it worth the extra bucks? I don't understand the technical jargon really so just need an opinion from someone who has used both maybe. Thanks.