The lackluster reverbs within Helix have been discussed elsewhere in this forum and I agree that they are Helix's #1 weakness. I believe they lack clarity, depth and space and can really compromise Helix's detailed amp models. Instead, I use one of Helix's Sends to my 11Rack (previously collecting dust) which has as its best feature great pro-tools reverbs (essentially Reverb One). What a difference; Helix's amp simulations' clarity and dynamics coming through! I'm sure any quality reverb pedal