My R9s replaced a Kel-tekPF9. I have only owned high quality firearms, but decided the KT was an attractive size. I had way to many issues with it to trust it.I searched for a "quality" piece in a "real" calibur. the R-9 was introduced by my toy store owner when he said "if you have the money, this is what you seek".
I carry a Kimber Ultra CDP 2 which is extremely reliable despite the B.S. that a 3 inch 1911 cant be as reliable as a full size. Mine is and I own 3, 4 and several 5 inch models. It is as good or better than the rest. (including a Les Baer)
Back to the PUP. The r-9 is not plastic, not cheap,but well worth it.
When I started off, it was unreliable and I was not pleased. I am happy to say that the patience paid off. I was told by Karl to use Silver tips, but mine hates them. I tried 124 Gold Dot std. and it is fantastic. It also loves Golden Sabers, but I prefer the GD's based on research. To each his own.
I have approximately 650 rounds of Gold Dots with 0 failures, 75 Golden's with 0 failures and 100 rounds of various ammo that it didn't like with many failures.
Some say "why pay 1k plus for a finicky POS. You simply
can't find a better small and I mean small "real" calibur and "quality" made pistola. Yes it only likes high end ammo. So what??? it is not a target pistol. It eats springs like an obease man at a buffet, so what?

if you value your life, comfort and can pay 1k plus for a serious tool, why piss and moan about a 5 dollar spring??? Who cares.
Some say for that money I can own 3X guns. Yes you can, you can buy a Zip car too. It isn't a Rolls Royce, but I guess if it works, enjoy!
You can buy 4 Kel teks for 1 Pup. I find that I would carry atleast 3, because when my ass is on the line and one breaks, I have another and when it breaks, I have another. I find value in doing something right the first time and the KT was a lapse in judgement. Some of you have had good luck with KT, I wish you well and only time will tell.
I think the only competition for this is a J Frame or an LCR. I have Kars, LCP's an LCR, J frames, and the R-9 is in my pocket all of the time. Sometimes it is a back up to my Kimber and sometimes it is all I have.
So this long winded answer is for those posts here and elswere that knock this over priced pos. Oh, I am waiting for a stealth to sit in the safe. I intend to have an extra so if by chance the company should be sold, or go out of business, I will have an extra...Just In Case.
Please all of you pup haters, dont buy this garbage gun, I will take it off your hands.