I have a Barber 1/2 Gainer, which I love BTW, and a Biyang Mad Driver on my board right now. I use the mad driver as a very low gain boost after my 1/2 Gainer just to give it a bit more mids to cut through on lead lines and stuff. I have come to find that I really love the 1/2 Gainer in the lower half of its gain range. IMO that is where it really shines! That being said I need something to handle some medium to higher gain sounds stacked with either of the other two pedals as well as on it's own. I play direct to board through a Tech 21 Blonde using either my Squier CVC Tele or my new Gretsch ProJet with blacktop filtertrons My initial thoughts are an OCD/Ultimate Drive/Hustle Drive or a Red Llama. I have about $130, but am hoping to stretch that farther than 1 pedal. Any suggestions??