Which is better a 5mw green laser pointer or a 5mw blue laser pointer?

Well I wouldn't say either one is better; it depends on what you want:

If you want a visible beam / bright laser get the green one.

green can do everything a blue can and more if its limited to 5mw but blue is just cool because its blue. its not better its just expensive

I perfer green they can be quite cheap for the type of laser on Ebay.

Blue always hangs cheapest around 50$ less if your lucky

Blue is always expensive I dunno why but its not better if your comparing 5mw to 5mw, not in my opinion at least

the green laser is better you can go all the way to 1000mw's witch is powerful don't go to eBay. you can find what you want on this site here ya go. happy hunting

laserpointerpro.com have fun you will be on that page for awhile.