I agree - copy and paste on putty drove me crazy enough to switch to a Mac for development work. "copy all to clipboard"?? I'll have to check out putty tray.
Also, I get complaints of my coworkers because I configure SecureCRT to behave like PuTTy, they say it's dangerous :-/
(I used to use Putty to check my email using mutt remotely when on vacation).