Curious on differences between Regular Led bar Reflectors, Convex

Im just curious as to the differences between the regular style cone reflectors you see in most light bars, and the Convex they say new style reflectors in led light bars? As for 3W CREE leds.
Pros Cons, Which is better?

Regular
http://www.ebaywinning.com/images/120综合-5.jpg

Convex

http://www.teammadetrade.com/ebay/kmotoring/77707789/4.jpg


Hoping to hear a quick answer if possible.

 

You have pictures of 2 different brand lights and 3 different reflectors. Not sure which ones you're referring to.

The 2nd picture is of a knockoff of Rigid Industries' old reflector technology. The reflectors on the left are flood pattern and the ones on the right are spot pattern.

 

Referring to the Spot reflector.

 

pm'd