Lab units are more expensive (at low power) because of the power supplies and heat sinking material. A lab unit will perform better than it's portable counterpart in most cases. When considering higher power however, lab units are FAR cheaper A 1/2 watt herc is 4 grand or so while a 1/5 watt lab unit can be yours for $1500 or less. Also, they have much higher power limits. The limit for a green hand-held is 500mW or so. The limit for a green lab unit respectively can be in the tens of watts.
Re: LaserGlow Let me know, and if they discount any labby type lasers, I'll try to get you first dibbs when LaserGlow finaly has thier Spring Cleaning Sale. I do need to know what approx power output and budget to stay within so PM me soon! First request will have first dibbs!