I'd be a little cautious. The Sig's retail for significantly more than the XD so they could be problem guns or outright scams. If it is a legit deal, go for either one, you'd be hard pressed to not make money if you decide to get rid of it. FWIW, NIB P229's are selling for twice what an XD45 is! It's too late for you now but the problem with your S&W was probably due to someone dropping it and bending the frame. I'm shocked a gunsmith couldn't figure out if it was bent or if the lugs on the cylinder were worn due to misuse. When it comes to revolvers, S&W is my first choice followed by Ruger for reliability and accuracy.
As to Sig's being a good brand, a P226 is the Navy Seal's sidearm of choice and the P228/9 get excellent reviews. Just know that they'll both carry about the same amount of ammo per clip as your XD though
About your SKS though, I'm not so sure I'd leave it in the white with just a clear coat over it. If you have the outdoor space and a small camp stove, you might be interested in this:
Blindhogg custom gunworks
Just don't try it indoors!
As to Sig's being a good brand, a P226 is the Navy Seal's sidearm of choice and the P228/9 get excellent reviews. Just know that they'll both carry about the same amount of ammo per clip as your XD though
About your SKS though, I'm not so sure I'd leave it in the white with just a clear coat over it. If you have the outdoor space and a small camp stove, you might be interested in this:
Blindhogg custom gunworks
Just don't try it indoors!