Stocks Manufacturing makes the Stock Locks - which are supposed to be secure high-end locks:
Stocks Manufacturing - Stocks Locks
Their U-locks are round key locks so I would be very interested to know if anyone has picked a Stocks U-lock?
Their website claims they aren't susceptible to the pen picking method.. (though it sounds like they never tried?!)
Please respond. I have searched the internet and nobody seems to have picked a Stock Lock _yet_ but many are suggesting them as a more secure Kryptonite lock replacement. If you have picked one, you'd best post this publically to the forum (and maybe cc: stocks)