Like others, KB wasn't a player around here for me either. I didn't generally like going there anyways, and only would if we were already in the mall for something else. Our closed shortly after Christmas last year, and I could say I probably was in there 5 times in the four years we lived here prior to that. And never on a special trip. I won't miss them as a store particularly, but find it more sad that toy stores themselves are struggling these days.
TRU on the other hand, I'd be sad about - mainly for the reasons I mentioned earlier. I think its a fun place for kids to go, at least it was when I was growing up, and I'd like it to be there for our daughter as well. It may be a thing where kids these days don't get quite as excited about a simple thing like that, what with kids getting into video games and ipods at younger ages all the time, but it was a pretty big deal for me when I was growing up. Our local store seems to do ok (crazy busy this time of year), so hopefully that's a good sign (KB here on the other hand rarely had anyone in it). I know that TRU is often priced higher, and they rarely if ever put anything on clearance, but if the prices are similar, I try to give them the business. I'm not a big fan of WM necessarily, so when possible, I try to give the business to TRU or Target if I'm buying collectibles.