I've been using my Helix into FX loop return of my Evolution Amber 40C (great polish solid state but tuuuuby sounding amp) with the speaker replaced with a "FRFR" for guitar modelers - Celestion F12-X200. It sounds killer!
I'm considering purchasing Catalyst or a DT25 as I'm going to be recording live with video and the producer wants us to have traditional amps and mikes in studio. Which one would you recommend more - DT25 or a Catalyst 60? The other guitaris in a band will be playing high end traditional amp - a Friedman or Two Rock so I have to have best posiible sound I can get to be on pair soundwise with that guy.
We will be playing pop rock (cleans+drives and one heavy rock song) - these are some of the songs (I'm playing white PRS and a tele - they were recorded directly via Helix):