good place to get solder kits?

i have soldered a little before. i really enjoyed it and im looking for some kits to buy. with like circuit boards.. i looked on google getting alot on robots and stuff. but i dont really know what i should buy. any help would be great. any good sites?brands? models or kits?
thanks a lot!
any good kits u would recommend?

www.electronickits.com It's pretty good