I'm really a begginer; I've never owned an aquarium. My brother has about 10 aquariums, ranging from 5 - 150 gallons in size. I want to jump straight into saltwater aquariums. I'm willing to spend up to $3000 to start off with. I want the whole live sand, live rock thing, with about 20 - 30 fish; not all at once, of course. The two tanks I'm looking at are around, 48x24x24. The TopFin, (PetSmart) rated at 150 gallons, does not have over flow tanks (not reef ready). I can get it with the stand for $600, plus tax, liftime warranty if you don't drill holes. The Oceanic tank and stand is rated at 140 gallons and has two overflows (reef ready)for $1000 with stand plus tax; 5 year warranty. Is the Oceanic really worth $400 more? It is 10 gallons smaller. Can I add overflows to the top fin with out voiding the warranty? What would you guys recommend. I almost bought a Cherry Wood 175 Bow Front Oceanic this weekend, but cam to my senses and realized I don't have the room. Which tank should I get?