Machines have seemingly gotten a bad rep somewhere along the way. In the 70's Nautilus was all the rage, and pick up any muscle mag from the 80's or early 90's and its a good bet a majority of the pictures will show bodybuilders blasting out reps on a machine. Then came the era of Swiss balls, rotator cuffs and "supporting muscles". You'd hear people spouting "oh, stay off that bench machine, you'll blow off your rotator cuff and your supporting muscles will atrophy! Come do one-armed instability presses on this pink ball!".
Bullshit, I say. There are some stellar machines available that are good enough to form the cornerstone of many routines.
For me, nothing beats the Hammer Strength Mid (MTS) Row. I LOVE this machine and if I didn't have a fiancee that was into interior design I'd try to find a way to tastefully incorporate it into my living room. I can honestly say that I've experienced more growth and soreness from it than doing bent over rows.
What about all of you? Sell us on your favorite machine