First [email protected] on a full frame, last three wide open on a 1.6 crop. Overall, prefer full frame because it it closer to 43mm diagonal of frame size 'dead normal" FOV:
Based on this and another thread, ordered this lens on ebay ($146 shipped) and it's the best $146 I've ever spent. Looks like a toy, performs like an L. Doubt I'll be seeing much of my 35/2 anymore.
Will post when it stops raining. If anyone is on the fence, you can't go wrong.