Looking for a SS 357 mag 4 inch barrel revolver. Considering a 65/66 or 681/686. Recently my LGS has a 66-2 available. Any thoughts or opinions about this particular model would be appreciated.

Other LGS have a 681 and a 65 available. The pricing on the 66-2 seems reasonable ($435).

Also what are your thoughts on fixed sights vs adjustable?