From what I understand RO is the best, but charcoal is a good alternative for those with tighter budgets. I bought one of the counter top models with a water carafe and I've been very happy with it
I feel like this is the right way to start little projects like this that can throw off a few dollars, or maybe even grow to more. Very inspirational and it has me thinking too...
I think FQL looks super promising, especially for the joins and slightly more complex SQL features. As someone who really doesn't like writing SQL but also doesn't want to be too limited by an ORM, FQL looks like an amazing tool to pick up!