They're good enough for me.
It's not that you have a problem, it's the fact that they simply don't stock a vast majority of the available electronic parts. I could go down the BOM for most of my products and they wouldn't have very many of the parts, if any! They're fine for what they stock, but like I said, they're not a Digikey or Mouser!
All electronics meets my needs, and I think they would have what the OP asked for, a replacement for Radio Shack for common parts like capacitors. I stand by my recommendation of all electronics to tr1 the OP.
I've never used Digikey, or Mouser, (since I was able to find what I needed at allelectronics) I'll take your word that they have bigger selections, but I don't need a bigger selection, and I don't think the OP does either. I said they would have whatever HE was likely to ever want. (since his previous supplier was Radio Shack, and they had limited selection.) I did not say that allelectronics had the widest selection in the entire known universe, merely that they have enough. (for what he asked for, and what I have needed.)
If store 'A' has what I want, I really don't care if store 'B' has a bigger variety of widgets. I already found what I wanted over at store 'A'.
To each his own. If you prefer Digikey and Mouser, so be it. I'm happy for you. I like allelectronics.