In my opinion，green lasers look brighter for the same power, as we perceive better in green. They usually have tighter mode structure, a smaller, more intense beam.

   High power Green Lasers Pointer are getting more and more popular. Green Lasers is astronomical observation assistant, stars and celestial body pointing. Green Lasers emitting in the green part of the spectrum are widely available to the general public in a wide range of output powers. Green Lasers Pointer outputting at 532nm (563.5 THz) are relatively inexpensive compared to other wavelengths of the same power, and are very popular due to their good beam quality and very high apparent brightness.  Green lasers have a wide variety of applications, including pointing, illumination, surgery, lasers light shows, spectroscopy, interferometry, fluorescence, holography, machine vision, non-lethal weapons and bird control: https://www.widelasers.com/c/green-laser-pointers-24

   The Red Laser Pointer is the wonderful gift. The Red Laser Light adopts the latest technology optics and microelectronics and becomes some of the most popular high-tech gadgets to hit any global market. You can find High Power Red Lasers in Widelasers.com. Red's wavelength has been an important factor in lasers technologies. Red Lasers emitting in the red region of the spectrum have been available since the invention of the ruby lasers in 1960. In 1962 the red helium–neon lasers was invented, and these two types of lasers were widely used in many scientific applications including holography, and in education.  
Portable, high-powered versions are also available for various applications：https://www.widelasers.com/c/red-laser-pointers-20

   If you are still hesitating about the choice of laser pointer, you can contact me and I can give you good advice.