4/3 - m 4/3 forum - the eternal dispute?

Nowhere. If you have a perfectly good E-5 and decent lenses, keep them. Save your money for something you really need. The EM-5 is not cheap, not less than an E-5 when you add the grip and a lens adapter and a "pocket" full of the m4/3 prime lenses. A second system with all new lenses will not improve your photography. It's great for gear lust and the camera companies love that feeling.

Planned obsolescence and constant upgrades of electronics are not good for your local economy unless you live in Japan or China.

When Olympus releases the next E-x it will have the same or better sensor. If Olympus ever decides to stop supporting DSLRs and the 4/3 HG & SHG lenses, then someday maybe I'll switch to full frame or the next best thing in another camera brand. I won't be switching to a m4/3 MILC (unless they make it bigger, add a lens adapter with PDAF and improve CAF beyond what my E-5 can do today). MILC are a step down from a DSLR, as we know them today.

--
Dave
No thought exists without an image. Socrates
http://whaleshark.smugmug.com