i sent you a pmWell green (532nm) is best for visibility so you can already see the beam slightly from a 5mW green at night
companies see here: http://laserpointerforums.com/f45/guide-buying-your-first-green-laser-30608.html
I would recommend you something like this: www.rayfoss.com
or: 6 in1 green laser pointer [OLGL6-1] - $23.99 : Welcome to O-Like.com, Your source for laser products
at dealextreme or focalprice you just can't know what you get (they are sometimes bad quality, sometimes way over/underspec)