So I need to buy an audio interface.
I'll need it for recording line in guitar, bit of MIDI and that.
I don't know where to start, I've been recommended this:

http://www.imuso.co.uk/Studio/Processing/Audio-MIDI-Interfaces/8785-/Edirol-FA-66-Portable-FireWire-Audio-MIDI-Interface?utm_source=googleproduct

But I'd rather not spend that much y'know. How low can I go before they start becoming shit? Any recommendations?