I have the 239TAC with the SRT, and two of the 229s without it. Both are excellent triggers. It really comes down to what you like and how you shoot.
If you do a lot of fast shooting using the reset, think seriously about getting the SRT. I find it noticable. The normal SIG trigger is a short "throw" to reset, but it is longer than many (most?) autopistols on the market. The SRT on the other hand is right there. The difference between having fired the gun and the reset... I have no idea, but in my mind it seems like a couple mm.
Keep in mind though, I can shoot my 229's very fast and accurate without the SRT... and so have lots of other people for decades. Being able to shoot either trigger system well is learned more than it is mechanics. I think the SRT is well worth considering though. I believe that, in the future, this will be the only system SIG offers.
Beavertail might help a bit for some people... especially with .40 or .357SIG, as mentioned above.
Front cocking serrations... not a big deal, as it is pretty hard to grip the gun and #### it that way anyway.
The wood grips on the Elites... these seem to have mostly gotten the thumbs down from shooters... including in the gun magazines, which almost never say anything critical about their advertisers products! Most guys think they are too thick, and replace them with SIG factory plastics (which I like a lot), or Houges (which are also good).
I am (or is it was?

) thinking about getting a .40 cal stainless Elite 229. The price has now gone astronomical. That may have gone on the backburner for now.