i use a hand crank for both gas and glow on all three of my gas cans..... i used to use electric pumps for glow, but i had 3 different brands take a crap on me in about 2 years...
if i was to buy an electric pump i would use this pump for 59 dollars, and make a do it your self system.... theres a nice thread on EFFING Gyants, and i saw a nice DIY setup here on RCU
http://www.jerseymodeler.com/id29.html