Hi there Elijah. I saw an old thread of yours saying that u wanted to choose from the F4 F5 or ATP. I have an F2 but want to upgrade. I have the same choices as u did a year ago and Im really in love with the F5! Then again th ATP is fully submersible and thats a BIG plus! So I really have to say that my top choices are either the F5 or ATP! What was your last choice?