Doverham, Ted, et al. I'm not arguing that ST/SST should be chosen, rather that the WR version seems to be one of the more reliable triggers. If you are in the market for a DL, you have a pretty fair probability of "the one" coming OE with SST. Unless you have reasons as stated above, that is not necessarily a bad thing. Especially, it is not a bad thing if you have trouble with double triggers and really want to shoot a Brit SXS.
I have a nice Holloway & Naughton BLE with the WR SST and WR ejectors. It gets shot a right fair amount on the skeet field and has had "nar' a hic-up" from either sub-system. Watch, now that I have bragged on it the whole gun will fall apart ala the wonderful one-hoss shay.
DDA