For the independent types — or for those who just like to dive far from civilization — Bauer's Junior II compressors are lightweight, portable and come complete with an air-purification system. These three-stage compressors are built for the rigors of diving and come in both electric and gas-powered models. Capacities range from a 2.9 to a 4.3 SCFM charging rate. Perfect for boat, vehicle, campsite or the garage at home, standard features include an inlet filter, vibration isolators, high temperature switch and a five-foot fill hose with scuba yoke, bleed valve and pressure gauge. Now through Jan. 31, 2006, Bauer is offering a $50 rebate on their entire line of portable breathing air-compressor systems equipped with Honda gasoline engines rated up to 8 HP.