I recently got a 996XT, and I'm getting good reception of most LA stations (both analog and digital, including most LAPD stations) with a base antenna (outdoor type) in my attic in central OC (we're not allowed to have outside antennas here). The only ones I have weak reception on are ones in far north and far west LA, due to distance and possibly terrain. I'm pretty sure that they would also be strong if I could put the antenna outside, considering how well I'm getting most things now.
I've read that there is a difference in the sound of the digital audio between Uniden and other makes, so I would also recommend listening to them before buying to see which you prefer. This is my first digital scanner, so I have nothing to compare it with, but I don't have any difficulty understanding the digital audio. It is noticeably different in character than analog audio, though.