Hey Craig,
Try the Lovepedal OD11, which is also a transparent-sounding OD that can be set really light, which is what you want for an acoustic, and has Bass and Treb knobs for decent tone shaping. The Amp11, btw, is the identical pedal with boost, so if you find this one at least you can give it a demo, and may even like the boost fan. I use the OD11 on my electric board and it's a nice, versatile OD that sounds like natural breakup ...tasty "grrrr" IMHO. This pedal is, btw, purportedly a redo of a Timmy, which I've never played. But the Timmy gets nearly universal love. And both it and the OD11 are very easy to find, and of course you'd want to demo them with your acoustic, and a PA if you can, so as not to let an amp color your demo.
FWIW, you may want to lurk in thegearpage in the pedals forum as dirt pedals are almost religion over there

Edward