okay... if anyone else has posted this than i apologize in advance. this is just way too confusing for me. i'm trying to buy one of the two amp-heads (SVT-4 PRO/B-4R) in the near future. but i raise two questions to nay takers. which one? AND which type of speakers (4 or 8 ohm) will it power better? i had thought that they power 8 ohm speakers better... but i'm not prepared to make a $1000 eff-up. i wanted to play either head out of an Ampeg BSE-410HS and a BSE-410H... good idea or bad idea? i'm also up for suggestions. thank you all in advance.