Since there are about a thousand different kinds, I thought I would ask TGP. Right now I'm using a Toshiba Laptop running Vista 32 bit. I'm planning on upgrading pcs in the semi near future so Windows 7 or 8 at 64 bit is likely. My daw is Sonar 8.5 and Music creator 6. I would like to have a usb 2.0 two mic/line inputs and midi I/O. I've been looking at the Presonus, Focusrite and Roland...would like to stay around the $150 range but I could go higher if it means stable drivers and less headaches. Thanks in advance.