If I'm ordering individually I buynfrom NTE along with most of my semiconductors.. As I've gotten cheap/fake Chinese knockoffs from ebay tht didn't work .. Nte backs up thier product .. If you get a bad transistor they will refund or replace it at no chargeUnless you're ordering caps in bulk Klondike Mike's kits are probably the best way to go. I've made the mistake of ordering a kit from another vendor and what I got was... not good.