OK...I'm going to take the other position. I think the TSO is the way to go. I haven't shot an Accushadow 2 but no disrespect to Angus and his shop, it essentially is a Shadow 2 with the 1911 style bushing. If you have the knowledge, you can upgrade a reg Shadow 2 to this gun with the exception of the 1911 style bushing which you will have to pay CZ custom or CGW to do for you. In the end..you can have the same gun for around $1700.00
I paid $1500.00 for my TSO in .40 S&W and it is the first CZ I have purchased that I will not modify in any respect and I have Cajunized 6 of my CZ's. With the longer slide and barrel it is the most accurate CZ I have owned and an absolute dream to shoot.
The 9mm TSO will cost you a few hundred dollars more but I suspect will shoot even better because of the lower recoil associated with the 9 vs the .40, although my .40 is like shooting a 22 LR.
Biggest difference is, as previously mentioned, is the TSO is SAO and the Shadow is DA/SA...but I convert all my Shadow 2's and SP-01's before them to SAO anyway..
Good luck with your decision....in the end, these are just opinions and you know what they say about those..LOL