I believe the 50mm maybe slightly sharper, but I think the 35mm is more versatile and nearly as sharp. A good flash is a great thing to add to your gear, and it will bring more out of your shots with either lens!
For a flash, I'd recommend a sb-700, sb-800, or a sb-910! I have a sb-800 that works awesome myself!
Dude! I'm not EVEN going to get into flash photography yet. That is a whole other world of headaches I just don't need right now.:dejection:
If your list of lenses in your signature is complete then I would be inclined to say, "Go for the 35mm". It gives you something you don't have, a wide angle (which isn't really "wide" on a DX), and you've got nearly the same perspective on your 55-200mm zoom.
That is some forward thinking my friend. :encouragement:The only thing I can offer is that you can pluck a 50mm picture from the middle of a 35mm picture, but you can't pluck a 35 from the middle of a 50.
I went to the 35mm 2 months ago, and I rarely use the 18-55 or the 55-200.
No regrets.
You probably weren't using your 55-200 that much to begin with then. Thanks, from what I've been reading online about the 35 I think I'm just gonna go ahead and get that one.
Probably going to get it new, since it seems that the used prices are only a few dollars less anyway.