Micro 4/3 Best IQ AF prime for E-P2

London UK
Real Name
Thinking of getting either a Leica X1 (Pricey!) or a E-P2.

As the X1 has a fixed lens I was wondering if there was a AF lens out there giving similar focal length that would equal or come close to the quality of the X1 and be faster than the X1's f2.8. When i had my E-P1 i also had a 20mm f1.7 which was pretty damn good but is there better?