Do I need an OM-D E-M5

I have an E30 and I bought an OMD and I can't afford to keep both so one needs to go... yes, the OMD is a better camera but do I need that extra performance? It hasn't been a clear cut decision...

First thing is what lenses do you already have? Personally my normal pack would consist of E30+14-54 and 9-18 and 40-150 so the weight advantage is not that large as the 9-18 and 40-150 are pretty small anyway. The 12-50 is actually a pretty decent performer if a little slow so the extra stops of light from a 14-54 or 12-60 would make up for the sensor improvements in the OMD.

EM5 wins:
AF Speed/Accuracy
High ISO
Higher FPS
Macro mode (12-50)
Weight
Screen Quality
Video
Primes
Weather Sealing

E30 wins:
1/8000 sec
ISO 100
OVF (EVF takes a second to appear when you old it to your eye)
14-54+HG Zooms
Price
Full articulated screen
Battery life
Lens hoods
Startup Time
Tripod Plate (OMD is too small for mine)

In my rough-and-ready tests I'd say that EM5 ISO6400 == E30 ISO1600 and EM5 ISO12800 is slightly worse than E30 ISO3200.

I have found the OMD a little fiddly, and I would really miss the 14-54...