I think that the P320 has been hashed out enough on here, but the P320RX compact may deserve some attention how that they are hitting the stores. I apologize ahead of time if this sounds like a commercial. It's not, I'm just excited to get the new blaster, and these are kind of my thoughts on it.
As far as I know, this is the first factory-ready RDS equipped compact pistol. I think that offers two main benefits. First is the price. The SIG was $749 with night sights and the milled slide with the RDS. My G19 MOS was about $1200 to set up with an RMR. Second is the guarantee on the RDS. It has SIGs "Infinite Guarantee", which by the looks of it will cover the optic regardless of how it broke, applies indefinitely, and is transferable. I really like this, especially with the beating that slide-mounted optics take.
So far I have noticed a few things that I like, and one that I really don't. The good: the night sights are nicely co-witnessed very low in the RDS window. The Romeo 1 has a small notch in the back which allows the sights to sit a bit lower, while still giving a useable sight picture. The night sights and Romeo 1 seem like a matched system that was well thought out. Next, I like the size of the window. I no longer have my RMR'd G19, but the window on the Romeo seems to have more usable space, especially with the low-mounted irons. Last up, and this is purely juvenile, but I dig the hell out of how the sight looks. It reminds me of an F117. SIG also includes a nice cover for the sight, which should be useful for protecting the glass/sight when cleaning the pistol. The bad: the brightness adjustment buttons are on the left side of the sight, where I foresee them being rubbed against the holster and inadvertently adjusted. The windage and elevation knobs also do not have positive clicks to prevent the knobs from moving. I'll mark them after I sight it in, and we'll see if it moves.
I have no idea what the battery life is on this, but I'm going to leave the sight on constantly and let the motion activation do it's thing. I've got a JM George on the way, so we'll see how the sight holds up to sweat and everyday use. This also has the heaviest trigger I've seen on a P320, right at 7lb 10oz average. I'm curious to see how that smooths out over the next bajillion dry fires.
I'm headed to the range tomorrow, and I plan to update this thread with any observations/problems/developments. I also really, really want to test the 1m waterproof guarantee in my bathtub, but I may hold off on that.
My wife took the good camera for the weekend, but here's some bad phone pictures of the RX next to the other two guns that I carry.