I have been using my Ampeg b100r lately for strictly on-stage monitoring. The band has JBL stacks out front with 18" bottoms. I run a Sansamp bass driver in front of the Ampeg with the line out of the Sansamp direct to the board. It's been working out pretty great for the most part with my custom P-bass (badass bridge and quarter pounder p/u). I put the amp on a stand angled at my head. Being one to try to fix something that's not necessarily broken, I ordered a Yorkville xm200 (15"+horn). Here is my thinking: front ported willbe possibly more punchy and less boomy in some situations (not a fan of 2x10's as a standalone) horn will add some top end dynamics up to 200 watts with an extension speaker. I have an 8 ohm avatar 2x10" that I can drag out for larger indoor stages. More versatility. Effects loop so I can bypass the internal preamp and just use the Sansamp if I wish Does this make sense? I will probably keep the b100r as a practice amp as I can't see myself parting with it. I'm just looking for validation here as I wait for my new combo to arrive. Thanks in advance for any comments!