<div>
(electric @ Apr. 17 2008,7:24)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">No, the one at the gym is the regular, up and down smith. Its a pity, I was having a lot of fun with the Squats, but I guess you guys know best.
I might try to clean and squat (it has to be front squat, right?) but since there is no rack, there is also no easy way out if I fail the rep.</div>
The Shirley Machine forces your body to lift in an altogether unnatural straight line. Not only do you learn to lift improperly, but when the weight gets heavy, you can get injured.
BTW, even in a power rack, there is no easy way out when you fail a rep. In any case the bar is going to clatter -- whether to the pins of the rack or to the floor. It is embarrassing, but rarely life-threatening...