For almost any use, the revolvers you listed are good solid choices. The S&W model 10 is a .38 Special, not .357, but they make a very similar weapon in .357 named the model 13. Other S&Ws that might fill the bill include model 64 (stainless version of the M10), the M65 (stainless version of the M13), and any of the same-size but adjustable-sight versions of these same guns (M15, M19, M67 and M66). The slightly-larger-frame S&W models 581 and 681 (fixed sight, blue and stainless) and M586/M686 (adjustable-sight versions) are also fine picks. The Rugers you mentioned are also great guns, but be sure to check the caliber markings on the side of the barrel, as some of these were made in .38 Special only (won't shoot magnums). The GP-100s usually have one-piece grips that slide on from the bottom of the frame, but there may be other styles available similar to what you mentioned. Also, I'd recommend staying away from the very early blue Security-Six guns (serial number prefix 150-, I think), as they use a different grip shape than any other Sec-Six models, which are darn near impossible to find. I currently own a S&W M15 and two GP-100s, but I have owned almost every other model listed above at some time in the last 30 years -- good guns, all.
The Walther P38 can be kind of picky about ammo, and if you feed it the wrong stuff it may not function reliably; I'd stay away from it for that reason alone. Parts and spare magazines can be a challenge to find and expensive once located, too.
I'd pass on the Taurus guns for the reason you cited.
Prices are hard to get a handle on, as they depend a great deal on the condition of the gun, and what the local supply and demand is for similar models. You should be able to find used, mechanically-sound-but-slightly-finish-worn examples of most of the revolvers above for less than $400, but that is not guaranteed, given today's volatile market for used guns. Ask the seller for a functioning guarantee (he may refuse; your call, if that's the case), and be sure to get a receipt that identifies the gun AND the seller.