Which roller rockers??

Which roller rockers are good? There are many choices from summit.

Crane for $195.88
http://store.summitracing.com/partdetail.asp?part=CRN-11746-16&N=700+115&autoview=sku

Harland sharp %209.95
http://store.summitracing.com/partdetail.asp?part=CRN-11746-16&N=700+115&autoview=sku

Ford Racing $299.99
http://store.summitracing.com/partdetail.asp?part=FMS-M-6564-B351&N=700+115&autoview=sku

Pro Form $149.95
http://store.summitracing.com/partdetail.asp?part=FMS-M-6564-B351&N=700+115&autoview=sku

I have heard of many guys running the Scorpions, but I do not know much about them. I want to determine what rollers have high quality and good value.
 
Crane is always a good product, Harland Sharp was reccomended to me by the "Thumper" himself, I believe it's either Crane or Comp Cams that makes FMS stuff, I wouldn't choose ProForm, and I've only ever heard a few "ghost" stories out of the hundreds of "thumbs up" for Scorpion rockers. I had them on a stroked 347, but only had the car for a few months. The car ran well into 7k, and the rockers kept up, so I couldn't complain!
 
Crane is always a good product, Harland Sharp was reccomended to me by the "Thumper" himself, I believe it's either Crane or Comp Cams that makes FMS stuff, I wouldn't choose ProForm, and I've only ever heard a few "ghost" stories out of the hundreds of "thumbs up" for Scorpion rockers. I had them on a stroked 347, but only had the car for a few months. The car ran well into 7k, and the rockers kept up, so I couldn't complain!

Thanks. It seems like tons of guys are running the scorpions. They are all pretty competitive at around $200.00.