usa battery chargers

i'm looking into buying a portable battery charger, i'm looking to spend around 100 bucks after reading some reviews i saw that schmacher made a nice one

[ame="http://www.amazon.com/gp/product/B001MYWBF0/ref=as_li_ss_tl?ie=UTF8&tag=ttr_car_battery_charger-20&linkCode=as2&camp=217145&creative=399369&creativeASIN=B001MYWBF0"]Schumacher SC-10030A SpeedCharge Automatic Charger and Maintainer : Amazon.com : Automotive[/ame]

then after reading some reviews i heard the quality has gone down on them.

so i keep looking and find this company

http://www.usabatterychargers.com/

and this modal
http://www.usabatterychargers.com/126ST.htm

i know it doesn't have toys as the schumacher but i don't think i really need them (although and alternator tester sounds kind of cool)

thoughts