Need some help for buying a battery voltage tester.

http://www.progressiverc.com/celllog-8m.html looks good.

My low voltage alarm displays total and individual Lipo cells if that's all you need to see. It was like $5 at Amazon.

For other voltage readings, I usually just use my voltmeter.

I agree, I have the simple tester I found on Amazon. Works great and is cheap.
$2.28 with free shipping
http://www.amazon.com/Battery-Tester.../dp/B005GJCJOA

I have one of those, but it just takes too much time to wait for all the cell values.

I didn't think so, It rolls through the readings in a few seconds

Maybe I am just too impatient

I do agree when I want to know the individual voltage immediately it feels like a while to get to that reading.

There are very informative details through your given link.

I bought one of those on eBay. The voltage was off so i got a refund. I'm a little apprehensive about buying another one.