Wow so lots to consider. I have a air pump at home. I actually don't need one at work cause right across the street there is a gas station with FREE air. I'm considering the cartridge...might be my best bet as I got a flat at 5 am in the morning(still dark out). While waiting for my co workers to pick me up lots of people passing by. EERR a little unnerving. I'll check out the ones you guys suggested. Thanks!!
Like a previous poster said. The Topeak Road Morph w/gauge. The new ones go to 160 psi.
Please, don't do yourself the disservice of getting a CO2 cartridge rig. One needs to be very experienced in changing flats and cycling in general as it's a one-shot deal. The chances of getting a pinch flat are pretty good as one goes through the learning curve.
http://ww.bikeisland.com has the aforementioned TPRM w/g for 35.00 w/no shipping or taxes.