Started out using only Panny cameras. I have a GX-1 and G2. Cameta Camera had a killer deal on E-PL1 bodies so I picked one up so I would have a body with stabilization. I'm loving this camera but I know little about the Olympus. I'm now looking to get another Olympus body but my budget is only $300 or less. Should I go with an EP1, EP2, or EPL2. Are all these considered a "step up" from the EPL1? Which would have better IQ, build quality, and lower noise at higher ISO?