Looking to replace my current Shimano Ultegra chain with one that'll take a easy-connect/disconnect link.

There are a few Wippermann chains I'm looking at, but before I spend $50-$85 on a chain, I was wondering if anyone had any experiences/recommendations with these models:

Wippermann 10S0 - standard nickel-plated Shimano 10 speed chain w/ ConneX link. The cheapest of the bunch.

Wippermann 10S1 - stainless steel Shimano 10 speed chain w/ ConneX link and hollow pins. Lighter than the 10S0, and about twice as expensive - $85.

Wippermann 10x1 - stainless steel 10 speed chain w/ ConneX link, no hollow pins. This is not a Shimano 10 speed-specific chain, so I don't even know if it'll work on an Ultegra 6600 triple drivetrain. Cheaper than the 10S1 by about $20.

Any thoughts on which one I should buy?