Ken, I'm glad you enjoy your Sig. They are excellent firearms.
I stand by my previous comments. The X5 Short you posted a link to and the X5 being sold by Bullseye are obviously different guns. One is stainless with wood grips, a magwell, skeletonized trigger & hammer, and built by the Mastershop with a price tag around $4000. The other is, as discussed, a black X5 steel frame with a standard 226 top, no special fitting done, not listed on the European or North American websites, and with a price tag of $1299. Is it a good gun, absolutely. Is it a better buy than a P226 extreme, in my mind yes. Is it worth $1299, depends on the individual. Is it a Mastershop product, no. To pretend otherwise is foolish.
The CZ is also a reliable, accurate enough, all steel, DA/SA pistol that has a lot of aftermarket support, with a good dealer network and Canadian warranty centre at a price that is $300-$500 less depending on the sales you find. That easily covers extra mags, a holster, and mag carrier. If you're on a budget or have a wife keeping track it all counts.
I personally prefer the ergos on the CZ. Put another 200rds through mine today, and though my shooting is still subpar, I really like the gun. So did my father-in-law, a dedicated revolver man, who ended up shooting circles around me. I think the CZ is the best value available in a metal frame pistol.