I'm currently using a Hughes & Kettner Rotosphere that I've owned for many years. Though I love its sound, I'm tired of its bulk and 24vac requirement. I'd like a replacement that will fit on my board and use the same 9vdc as everything else.

I've been considering the Tech21 Roto Choir and Strymon Lex. I'm not considering the Neo Ventilator due to its high price.

Has anyone here compared these pedals?