What would be some DAWs that you would recommend that are compatible with OSX 10.7. I would like for them to handle VSTs like peac and triforce. In addition, I would like them to work with my midi keyboard.
Oh god that "le" shit is SO FUCKING ANNOYING.
/rage
Well, most DAWs already give you the possibility to use inhouse synthesizers ... then what is chiptune on a DAW other than a song with really basic Synth Settings/Waves. Which hardware or artist has inspired you to create chiptunes? Look up the limitations of that hardware and create a Song within those limitations.
I'd go with Renoise, and if you don't like Trackers use Ableton Live. Both really good DAWs.
PS: Triforce is only available on Windows. OS Support is up to the Creators of the Instrument not the DAW.