I have a turbo 35 gfx and from experience it's a great charger. The gfx can discharge up to 35 amps......whether you need that high of a discharge rate is entirely up to you. It has a motor run in feature that is nice. It has 10 memories for different charge profiles which is nice too. The gfx has a charge and discharge curves that can be looked at. There are other features that I didn't touch on. But other than CE is the industry standard for matchers also stands for something.
Integy has great products too. The 16 x 7 is a great charger. Don't know if it has a motor run in feature though. I know it discharges at 20 amps and charges up to 7 amps.
The difference in price is huge, but I don't think you can go wrong with either. If you don't have a charger look into others and do some comparisons........ It will make you more aware of the differences of each charger.
Hope this helps......