I'm the proud new owner of an Airis Effects Savage Drive. (http://www.airiseffects.com/) This is a high-quality, hand-built/wired OD pedal with an indestructible metal case and true bypass on the switch. I've only had a day to mess with it, but it's a keeper. It features Drive, Output, Bite, and Tight knobs. The output can be set much hotter than a standard Tube Screamer, and the Bite and Tight knobs also feature a wide range of tweakability. It's a bit odd how Bite and Tight interact at first, but you can always find the sweet spot to overdrive your amp (err... profiles). You can also find some not so sweet spots at extreme settings, but maybe they have their time and place...
I'll post some clips soon, and intend to compare what it can do vs. the KPA's Green Scream effect model. I don't really care for the standard Tube Screamer sound - it can be a bit thin and/or harsh for my tastes. I really like the Maxon OD820 though. Many of my favorite profiles are from SaundLeb (formerly SoundLab) and Premier Profiles who both use it as a boost. I feel like this pedal can get those tones and more. And the distortion on it is pretty smooth and natural sounding - unusual for pedal distortion.
This may sound like a sales pitch...I have no affiliation with Airis Effects, other than an old internet friendship with Rick, the owner and sole employee. We met on the SSO forum discussing the best ways to get brutal metal sounds from the Pod HD. He's a fun guy and a much better guitarist than me, and I have an album of his that's pretty great. I do want him to succeed in his endeavor and recommend you check his page and product line out. But I would not recommend anything I haven't personally used or don't believe in - I try to look out for all guitarists, especially this great community.
The one thing I don't like about the pedal is that the LED's are really bright - so bright that you can barely see the graphic (which is awesome BTW) on the pedal. But you will know when it's on!
