I got my start in modding here in Philmusic. And I'm back. At least for now. Anyways, I've always said that the Boston HM100 is a great platform for modding and the end result can be awesome. Some things have changed, like it's already SMT which makes it much more difficult to mod.
Again, it's a circuit clone of the Boss MT2 but is even superior to that because its chips are JRC4558. Which means they are DIP chips that can be drop-in replaced by better chips such as the TL082s or Burr Brown OPA chips. The input buffer is a FET which makes it very good, high impedance input.
I used to say that my Boston HM100 will go from clean to Heavy metal and all points in between. Now, here's the proof. I only used an IPad, still figuring out how to make a real-time video using my recording gear and a webcam.