Need help choosing between Sigelei Wehe Compax, Sigelei m Class compax

So I'm on heathCabin they have both for about 6.93 each they are both the pods system that i want the m class is newer. So I'm thinking newer might be better just of the add futures etc but i could get both but then it might cost more to replace both pods or coil for the both of them they have tons of good ass deal so many to choose but i look at everything i have three that I'm really interested in. Of course both of the two i mentioned the other is Innokin cool fire ace 40w but i really…

Need help choosing between Sigelei Wehe Compax, Sigelei m Class compax

My brand new coil taste burnt

I've only been vaping for a few weeks and I have a smok priv v8 there it no wattage or anything just pop the battery in and vape. And it comes with a smok tfv8 baby tank with 2 coils both 0.25. The first one was preinstalled and I primed that one perfectly and it lasted me 2 and a half weeks. Today I changed the coil for the first time I primed it let it sit for 20 minutes and it tastes burnt. I don't know how to fix it. Could really use some feed back. And the juice I'm using is 70vg 30pg….

My brand new coil taste burnt