I will third the HBE germ 44. love it. stacks well. with a lot of useful tones. I picked one up here for $50. def can get them used for under $75. I have a half dozen HBE pedals and they are all great builds.
At $130, I've recently become a fan of the Fulltone Fat-Boost (latest version. 3 i think). To me, it gives a nice SHO kind of clarity to your tone, but you can adjust how much drive you want via a separate knob. The separate treble and bass knobs are what makes it a treble boost (or other type of boost if you wish) and they were what really sold me on this thing. I actually chose it over a $220 Diaz Texas Ranger because I had more control over the shape of my tone. It does add a nice touch of compression as well, which I love, but it's not selectable on/off. I know Fulltone takes some knock around here, but I really feel this is one pedal Mike can be proud of.
You might find it used for this price. Diaz Texas Ranger. Zvex SHO is a nice transparent and loud boost. FWIW, I preferred the Ranger over the Retroman Beano and the Analogman. I just feel like the Ranger has the mojo. Maybe I just have a really good one.