Well I hate my BCD436HP so bad I just bought a new BCD536HP both meet all my needs atleast I did not PAY $425.99 plus tax $42.50 like I did for my PRO-668 only to have Radioshack drop the bottem out of the market 45 days later for less than $250.00 for a battery hungry scanner that I get 4 hours out of new fully charged batteries mind you the 668 sill has a use just not with batteries. My 436 and 536 perform flawless and out perform my PRO-197 PRO-106 PRO-668 in audio quality and range but I still do not hate Radioshack just hate the fact I spent over $200.00 more for a unsupported scanner.
Do you really only get 4 hours out of the 668? Even with digital decode in a city were scanner is never silent, for more then a second, I still pull around 8 hours on digital, on analog around 12-13 hours, using Eneloop pro's. 4 hours something wrong with batteries, or defective scanner.