Wood chems

I need to purchase some stripper and brightener. The first batch I ever had was giving to me. So what is best?

Anybody ever use this stuff?
DSR-50 Wood Stain Striper (5 Gallons) from Powerwash.com

is it better then this stuff?
F-18 MAX Wood Stripper & Cleaner
F-8 Neutralizer / Brightener
F-10 Percarbonate Cleaner

What is the difference between F-18 and F-10?

Thanks for your help