Low Budget - run sponge filters with air pumps.
Medium Budget - I would go with AC110s with the stock sponge(mechanical), filter floss(finer mechanical), and the stock bio-rings for BBs. I have AC110s and use type of filtration and keeps the tank sparkling, clear.
Unlimited Budget - wet/dry, 2 sponge filters, 2 AC110s, 2 FX5s....haha j/k