I'm a little frustrated with the low-light performance of my E-PL3, even with the PL25. Shooting photos at bars, it jacks up the ISO to 4,000, and the results are pretty useless. I've read that the GX1 is better in low light. Seems like I could get around $300 for the E-PL3 and buy the GX1 for about the same price. Given that there's no timeline for the GX2, would this be a good swap?