A great alternative, or step between clearos and rebuilding as you learn more about battery safety and resistance, are cartotanks. I've completely given up clearos for them. The taste blows any clearo I've tried away, and I've tried Mini Protank II's, iClear 30, iClear 30b, iClear 16, iClear 16b and some generics. Never buy generic. Seems like a great deal and then it breaks in a day.
On the recommendations of several posters here, top of whom was Baditude, I purchaed a few tanks from IBTanked and I could not be happier! The 19mm option is the extact diameter of the beauty ring that comes with the MVP 2, and you can get custom paint jobs. I haven't had a single issue with any of the 4 I own, and I don't think a clearo out there could top a cartotank on taste. That's just my opinion though, I haven't tried ALL clearos. I do kinda wish I skipped buying what I did of them though...