Ametek motor spec

[SSR]

I was having a look around at what was available and found this handy looking site:

http://www.ametekfsm.com/Product_Compare.aspx?MT=1

I don't know if it's been mentioned before, but could be quite useful if you need to compare motor specifications. I wonder if there are any advantages to be had by fitting the Tangential type; life, current consumed, noise etc?