Hi I am starting to use effects pedals and I have the opportunity to buy one. First I want MxR M87 bass compressor to compress a little the signal and get some harmonics. Then someone talk me about the SABDDI and I saw some videos and I like the idea to get vintage tube tones. Now I have this two (very) different options of pedals and I only can but one at the moment. Also, I am no sure if the Sansamp works well with my bass because I heard that the SansAmp Bass Driver DI may have problems with some active basses. I have a Warwick Thumb bolt-on broadneck bass, 5 strings with MEC2 Active Preamp and MEC Pickups, passive/active. Any one have experience with this bass or similar ones using these pedals? The sansamp will be useful for a bass that already has a preamp?