you got lucky then. my wife went through several aspire BDCs and they were utter junk, and only like 1 in 5 atties worked properly, they were also not rebuild able and therefore cost inefficient.Oddly enough I've used several Aspire products; I've found them to be well made and have had absolutely zero issues with them.
For the OP, if you've already been using your buddy's Atlantis and you like it then that's an option for you. Another suggestion would be the Kangar Subtank (mini or standard), it comes with an rta deck so you can build your own when you're ready. Note that I've never used one but have heard good things about it.