Re: E-System dilemma
I would recommend the E-M1 (coming from E30) & have even bought a 50-200 SWD lens to use on it almost a year ago now & glad I have as it works well on the E-M1. With these bigger lenses though I also recommend the HLD-7 battery grip to make it better handling as well as doubling the battery life. The only drawback with the E-M1 compared to the DSLR models (E3, E30 & E5 all use the same AF modules AFAIK) is that it only uses horizontal PD-AF pixels (needing vertical detail) but in most cases it is fine (a rotation of the body for focus lock can get around that too).
I fiddle with violins (when I'm not fiddling with a camera).
Cameras: OM-D E-M1/HLD-7, Olympus Stylus 1, OM-D E-M5/HLD-6.
Lenses: M.ZD40-150mm f2.8 PRO Lens with MC-14, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, ZD12-60 SWD, ZD50-200 SWD, EC14, EC20, EX25, Sigma 150mm F2.8 APO Macro DG HSM.
Flashes: FL36R X2, FL50R, FL50.
Software: Capture One Pro 9 (& Olympus Viewer 3).