Hello bass friends, I have to replace the tubes in my 2006 (American) SVT 3-PRO. I am on a budget (not really) and am looking for the best tubes to provide the best tone possible. Naturally, I looked at Groove Tubes first, but the Ampeg Tech Rep said that he thought that the Electro-Harmonix were the best way to go. This is my first re-tube ever since owning my SVT. What do you guys think? I value everyones opinion because I am a tone junkie and I have no clue what is the best or what to use because again, I have never done this before. Thanks everybody!