yeah I like that and I like this. Both acts make enjoyable music, I don't see the much difference between liking Perma and liking something like Mixtapes.
I guess if you wanna boil it down to logistics, there is no difference between liking something like Perma and something like anything else. It comes down to personal preference and what sounds better to you and what you enjoy more. It's not like these two bands share any sort of characteristics - it seems as though the only connection you've drawn between the two is the YOU find them both enjoyable.