Yep SA XD's are great guns and have so many variations. I agree with others, S&W M&P's are also great choices. I have both guns mentioned and love them. As stated by others the best this to go out and rent or shoot with a friend who has several and see what fits your hand and what YOU like. Only you can decide what is best. We each love different items for so many reasons. Mostly it is what sits in our hands well and is accurate.
May also want to look into refurbished Sig's. Many places have them at a great price and they are on a whole new level. The SIG 226 and 229 are great choices for double stack 9's.