What's your opinion of Aguilar preamps? When I was looking at preamps in a store, (I got an ampeg SVP-pro), the guy told me about all the brands they had, but I noticed the aguilar ones (they had both) were not mentioned. I asked about them, and he said he didn't like them at all, and doesn't know why people buy them. He said something about Aguilar preamps only sounding good with Aguilar poweramps and speaker cabs. What do you you think about this?