I was into APB about a year ago but got out due to cheats. APB themselves had a monthly updated name and shame forum section and there were hundreds of people being banned every month, the Russian and Asian servers being the worst.
At least two internet "companies" were making business out of selling hacks that would be working only days after an APB update. I think APB is a good shooter and absolutely loved it for the first day after a server update. After that your stats would take a nose-dive.
If they really have improved I may try it again