I own an SR9C and it is my everyday carry piece. among compacts it was the easiest tot transition to from being a mainly full sized pistol shooter. the 10 round magazines are great for concealing and the 17 rounds with the grip extension sleeves are great for target practice. but down to the points that actually concern you...
the SR9 is a great pistol platform that, though it does require a good 200-300 rounds to loosen it up and function smoothly, is a very good gun for home defense, range toy, service piece and just new gun owners that need to work on fundamentals. the larger back strap fits my hands well enough to that I can shoot it accurately and in the last mockup Navy Pistol Qualification Course I shot with mine I tied my best score with the M9 while on active duty. for $400 it is a great gun that is quite durable, tool marks are negligible and most are not plainly visable unless disassembled, and highly reliable, I still haven't reached the 1,000 round mark on mine yet but it has yet to fail me and I do not foresee any reason that it would as long as I do my part and clean it.
now for the bad. it is, essentially a budget line hand gun, the trigger starts off pretty gritty and though it does smooth out with use is still not quite as smooth as a Walther P99 or Springfield XDM. the ammo capacity is nothing to sniff at but there are higher capacity handguns like the Springfield XDM. and finally although the ruger has a reversible backstrap with a flat and arched side to help match the grip size to the shooters, it still does not have the customization options that the XDM, M&P and gen 4 glocks do. however the SR9 does not fit in the same price range as all of those guns and when compared to other guns of the same price bracket like the FN Herstal FNP or Springfield XD, the Ruger beats all competition in all fields listed.
now for the ugly, some shooters report peening issues with the SR9 but from what I've seen of all the detailed pictures and descriptions it is nothing more than small burs forming from a lack of proper lubrication after cleaning. not one of the cases of peening happened with a gun that received proper maintenance.
those are just my .02, I hope your new gun brings you endless joy.