I would also recomend them, Even know i dont have one right now, I had one in my old car, It took heaps of abuse, Still kept on going!
Disscharged it all the time from watching movies in the car ect, But kept on going! (after jumpstart)
When i brought my old car, The battrey was going on 5 years old, Thats when i started pushing it to its limit's.Huge stereo, Dvd ect
Finally packed in at about the 8 year mark!...I did put that inox battrey stuff in it at the 5 year mark, Not sure if that is part reason as to why it was so good or not.
I now use SSB manance free,Im very happy with them so far, But still would recommend Supercharge. Well the one i had anyway!
But thats my only experiance with them, So not sure if there the best in all applications.