pls tell me about the 2 very inexpensive sigma primes for m4/3rds ?

Here's the Link to Roger's tests:

http://www.lensrentals.com/blog/2012/05/standard-range-micro-43-imatest-results

Plus other m43 lenses here:

http://www.lensrentals.com/blog/2012/05/wide-angle-micro-43-imatest-results

His big advantage is he has access to a lot of copies of each lens, so he can always check another one if he gets an iffy-looking result.

I'd have thought the Panasonic 20mm would be a bit better choice than the Sigma 19mm, if funds allowed.

John