Like ShootingStar mentioned above, I recently purchased a pair of Zefal Mini-Clips.
http://www.zefal.com/zefal/produit.php?key=45
So far, I really like them, and they are easy to get in and out of, no straps involved. I considered the Power Grips, and found the reviews to be very favorable, but I thought I'd give the mini-clips a try first since they are only $6. I may try the Power Grips later.
I searched the internet for suggestions of what to use instead of going clipless. I'm just very afraid of the learning curve and falling, because of my age, and because I've already had two knee surgeries. I'm afraid of falling and re-injuring my knees again.
I also saw another product (alternative to going clipless) that looked interesting, called Hold Fast pedal straps. But they were even more expensive than the Power Grips.
Ciao
2011 Jamis Coda Femme (with Coda Elite upgrade)
1997 Trek 730 Multitrack
Yep, I prefer STEEL!