I'm happy with my panasonic 14mm for outdoor shooting...but am looking for something that suits the other 50% of my needs - indoor, low-light parties/bars/restaurant shots. I read approximately 1 million reviews and came to the conclusion that the pana 20mm was my best bet, until I read the thread about how poorly it performed in conjunction with the e-pm1 in low light situations. Any recommendations? I don't currently have $1000 to spend, but am willing to save up if need be. Something between 12-25mm would be ideal.