and there are some differences, plasmalights has changed a few compnents such as the glass to make it tougher and better for paintballs, also has different settings and as you pointed out, more mounts. also when you buy through plasmalights you are purchasing the service as well as they will sort any problems and help where possible where as i doubt the amazon retailer is, nor are they at any paintball events unlike plasmlights
aww ive got an e-flexboth, can attach to i4's easily, they were doing it at scenario games last year, buy a cam and they fix it to your mask or they would fix any perbought ones
i was using them as an example, but the main idea is the same, i am 99% sure they would be able to fix them onto a pair of e flex'saww ive got an e-flex
the guys there are into doing what they can so if they can't at current; they will find a way
no worries bro happy to help
but fi you do buy use the code BLUEBEANIE for a free barrel mount which will mean you are basically sorted 
