New Scanner Suggestions

I have a Uniden BC72XLT scanner. I'm looking to upgrade it, so to speak, with purchasing a new car antenna for it. I'm curious as to if there's any models out there which have a greater range than just a regular Nascar Scanner?

I've posted a suggestion area on my Youtube page for people to give me their ideas.

http://www.youtube.com/saintjohnrailfan

Thanks,

-Matt