I tried a SVT CL at guitar center a while back and really liked the sound it put out. However, the weight of the amp was really off putting, and it would be a major pain to take to gigs on a regular basis. I've been looking at options such as the Traynor tube amps, the peavey VB-2, which are around 50lbs each, or possibly the ampeg vb4 or new pf50. The tone I'd like to get is the grindy metallic bass sound you get from cranking the preamp gain on the SVT. I figure that the pf50 or vb4 could possibly get close to this, but I'm not sure if they would be able to get that distorted of a sound. Most youtube videos only demo clean-ish sounds on them as well which makes it difficult to get information on. The one cool think about the peavey is that it has two channels, but I've heard the vb-2 can be prone to electrical issues so I'm not sure it is a good buy. I know almost nothing about Traynor amps, but I've seen everyone on the sub talking highly about them so I figured it might be worth looking into. Right now I have a sansamp into a carvin mb510 combo. The main issue is the drive sensitivity on the sansamp. With me using an active bass, it is near impossible to get a drive level I like on the sansamp due to the fact that a minor adjustment on the knob makes a huge difference in gain. Two other possibilities I am considering are getting a PA tube poweramp and running the sansamp into it, or getting a multi-tube bass preamp and running it into the carvin amps poweramp. The carvin head does have a single 12ax7 in it, but it only adds harmonic richness when dimed, it doesn't come close to distorting at all. I've tried using a bunch of different bass drive pedals like the big muff and boss pedal (My guitar center had a good selection of bass drive pedals on a random day so I sampled a bunch of them) but they all honestly sounded like ass). The main things I'm trying to balance is getting a killer tone without having to break my back at every single gig. If anyone has any suggestions I'd love to hear them.