Digital display balancer

http://www.amainhobbies.com/product_...Voltage-Tester

I have been using an Astro Blinky balancer for some time now and recently bought a new charger the Triton EQ 2 which is also suppose to aid in keeping your batteries happy.

But I saw these the other day at A-main hobbies and wondered about them, I would like to see the pack getting balanced and be able to know after a run where the cells are at. Does anyone have any experience with these? Would you recommend them and if so what brand?

Thanks for your help!