Originally Posted by Quicksilver8907
I was hoping to stay around the $500 mark, but I am open to ideas.
Funny you should ask; I just took a pic of two the guns you're considering:
That's a P226 and I got a .22LR conversion for $240 and added another $80 worth of parts from Sig Power to make it usable. Give the cost, I don't think that setup is within your budget requirements.
The M&P 22 has Dawson Precision fiber optic sights which are very bright. I think the gun is approximately $370 an the sights were $80. So that's probably the way you should go.