I own 4 Taurus revolvers, M85SS UL a daily carry, bought in 1996, a 3" late 80s M66 bought in about 2004 and is a carry option for the belt, a 4" 66 early 90s, bought in about 2001, and a new M605 Poly Protector bought last year. Every one of 'em is an excellent shooter. The 85SSUL has an AWESOME light and smooth trigger. The others are heavier, but smooth. The late 80s 3" gun has a little creep in the SA and the DA is the least smooth of 'em, but it's accurate, reliable, and I occasionally carry it and shoot it often. The 4" 66 is the most accurate of the lot having the longest sight radius. It'll put everything in 1" at 25 yards off the bench with .38 wadcutter or a Speer 140 grain JHP .357 magnum load. The 3" gun isn't far behind it. The two snubbies shoot about 3" off the bench at 25 yards which is as good as most snubbies I've fired. My 605 is a regular belt carry, could be a pocket carry with the shorter grip, but .357 loads kinda need the full grip as it's under 20 ounces. My SP101 was a little more accurate, but it did have a little more sight radius, so it was a little easier to do precision shooting with off the bench.
Anyway, I like mine a lot and carry all, but the 4 inch gun a lot. The 4" gun makes a great trail gun, but it's a little heavier than a K frame, frame size being sorta between K and L frames. The 3" gun's frame, an older gun, is exactly K frame sized. So, the 66s have changed over the years. They're now about L frame size which allows a 7 shot cylinder.
As for Taurus CS, I haven't had to deal with 'em, ever. Their record, though, is spotty.