I really liked four thirds. I had five of their cameras:
E-300, E-500, E-510, E-3 and E-1
And four lenes:
14-45, 40-150 F3.5, and later 11-22 and 14-54, when the prices went down.
I only shot the E-300 and E-510, the rest were bought recently out of nostalgia, and because they costed pennies. I got some of the best shots using their kit lenses (14-45, 40-150), because I simply couldn't afford more when I was in college.
E-3 with 40-150mm F3.5-4.5
E-300 with a 14-45mm kit lens:
E-300 with a 14-45mm kit lens:
I am seriously considering getting an E-3 for $150 and filling up on SHG zuikos just for fun, now that they are third-of-a-price and I can actually consider buying them, instead of just hoping.