I have heard little to no bad things about AlertPay and Revolution Money Exchange (RME). Although I haven't heard much about RME since the free money to sign up part ended.
I had a lot of trouble finding alternates and ended up making my own list. If you want to check it out you can see it at
index. (www paymentalternates dot com)
I will be adding information on Amazon's new payment system this week. It hasn't been going long enough for me to be able to say yeah or nea about it yet.