| whoa........190 Hippies are alot of ski. After working most of last winter in a tele shop, I find its mostly about what your style is. Most of the guys who have been doing it for a long time (like 5-20 years) tend to like the G3's and I am sure they will hold up to a moderate amount of abuse. They are a bit mushier in the response area, but its a more traditional feel. They have some reliability issues for guys that really like to get on it though, so if you ski hard look elsewhere. The Cobra R8's are a good choice for a nice simple and strong binding with no gimmicks. They tend to be a bit faster reacting and may feel like less of a leap from Alpine non free heeled skiing.
I haven't had much experience with the Hammerheads, but from what I hear most people like em that have em, though a few people I have talked to weren't a big fan. I think the main thing with these is that they have to be set right, or they don't work right. They have something like 13 different settings and you gotta figure out which one is right. From everything I hear they area great binding and you wouldn't go wrong with them.
If you are truly worried about strength, then checking out the Bomber Bishop stuff is well advised. They are a bit clunky and big, but they are by far the strongest binding I have heard of. Formed from billet aluminum and tintanium, they are still pretty light. I did see one pair come back with mounting issues that involved pulling out of the ski, but I think those issues were mostly based on the fact that the guy who did the damage is probably the most agressive tele-dude I have seen and has broken every pair of bindings he has owned.
So yeah, in my estimation, for decent strength and simplicity, go with the Rotta Cobra R8's, for similar strength and bit more nerdyness go with Hammerheads, and for all out strength (and yes the inserts on the K2 ski's helps with that alot too) go for the Bomber Tele setup.
JH | 
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