I don't see why the choice of base would create tangles. There are a couple of possibilities I can think of which might have caused that. First, the hair quality - if it wasn't properly treated to remove the cuticle, and then was inserted into the system in different directions, with the cuticles rubbing against one another in opposite directions, that would cause tangling. But that is a pretty elementary mistake. If you bought your system from a reputable supplier that shouldn't happen. Second possibility is simply that you didn't baby the hair as much as you need to. System hair doesn't get any sebum from your scalp like ordinary hair does, so it dries out much more quickly. That can be accentuated if you wash it very often (once a week is enough for a system), or spend a lot of time in the sun, or in the sea, or in a chlorinated pool. Systems also need to be conditioned with a very rich good quality conditioner to keep the hair in nice condition. Does any of this give you a clue as to what might have gone wrong in your case?