If these are the options we have to go with Fisher. He would be great giving us 8 to 10 experienced minutes per game. He can come in and hit big shots and be huge for us in the locker room. Flynn hasn't proven anything to be able to step in as a veteran in the playoffs for me.
I'll be honest...I think if any of these guys have to step in for anything more than mop-up time in the playoffs, we are in big trouble.
I look at this spot as the regular season insurance policy. They can look for a more reliable veteran at the deadline (and just cut Joseph, or whoever they sign now, if they need).
Based on these options, I am leaning towards Flynn. I hate his game, and don't think he is a good NBA player. But I also think he could be a decent enough emergency guard, who could come in on short notice and bring energy and some quickness.