If you start finding pedals you like, but that are sucking too much low out of your tone (which a lot of guitar-oriented pedals will do), you can find loopers that give you an additional dry signal to mix back in. MUSICOMLAB PARALLELIZER, Saturnworks, Radial mix-blender, etc. -- usually a bit expensive but very versatile. I built moosapotamus's paralooper ([Invalid or Expired Link Removed]) for this exact reason -- when I am in a bass + noise setting, I run the worst offenders through that.