hi !
the books r certainly gud and hav an advantage from mtg's or others as they r focused only on JEE.
the buks were released in june 2007 and since then, i hav read many issues !
two weeks before the JEE exam, i bought the latest issues and they proved to be quite useful !
so, if u hav 2 yrs of time, i suggest u to firstly hav a luk at all monthly mags like chem today(mtg), spectrum(arihant), etc and then decide which one u like !
all the best !!!