Hi, I currently had an E-P1 with the Olympus FL-20 and I would consider it mediocre at best. I'm curious what you guys would recommend for a solid flash unit. I'm looking for a flash unit to use during low light environments. I have the 20mm lens, which is find is decent for low light, and also have a 45-200mm which I find much more difficult during low light. Anywho any help would be appreciated. Model, price, pros and cons if possible. Thanks!