I don't think you could really go wrong with either. My first gun was an XD-9 and I absolutely loved it! I currently own a couple Sigs and, well, I love my P229. It all comes down to preference, but I personally prefer the DA/SA design to a striker fired design. The SP2022 is a downright bargain and I'm contemplating buying one while I still can (supposedly, they're going to stop selling them in the US market and focus on the P250, which didn't impress me).
JetGuns has them on sale on their website for $433 in 9mm. The fact that they come with night sights from the factory at that price further sweetens the deal, IMO. I've shot one that a friend owns (in 9mm) and was surprised to see I was shooting it better than my P229.