hi, i'm replacing the emg 40hz in a spector q6 six string bass, as well as the preamp. i'd like to purchase an active pre w/ three band eq and a nice pair of pickups to go with it. i was thinking about either the aguilar obp3 preamp, or the bartolini three band, with a pair of bart soapbars. the question is, which soapbar? there's like eight of them on their site. so anybody got any suggestions?