Keep the Oly 17mm 1.8 or the Panasonic 20mm 1.7?

I appreciate everyones feedback.  I've decided to keep the 17mm and sell the 20mm.  The difference in sharpness is noticeable, but I prefer everything else about the 17mm.  I still think the 17mm is overpriced, but I'm hoping I'll forget about that soon.

A few more comments:

- Banding:  This seems to be a constant argument on the forum, but it seems pretty clear cut to me.  I have the kit lens, the 20mm and now the 17mm.  When using the 20mm I often see banding at iso 3200.   I've yet to see banding with the other two lenses.  Once you notice the banding, its really hard to ignore.

- Returns: If I use a lens for a day or two testing it out and don't like it, I'm returning it, simple as that.  It's in new condition with all the packaging and its the price of doing business.  If I buy a lens, use it for a week on some photography expedition and don't like it, I'll sell it myself since at that point I would consider it used.