From my experience - Trade Ideas is much more better. All depends on your needs. I've been using it since 2008, and testing also other scanners when any new is launched.
TC2000 has charting, Trade Ideas no - for me this is the biggest difference. But it doesn't matter if you have your own charting system on platform that you use.
TC2000 - 89$/monthly | Trade Ideas - from 75$/monthly. Both offer better price when buying for whole year.
If you wanna try Trade Ideas - I've got nice 30% rebate on it. Just PM me.