I have only read Rigante series so far but i loved the series.
It is what made me a DG fan and made me wanna read his other series as soon as possible.
I didnt even know of DG before my brother came home with Sword in the storm which was amazing.
I didnt know heroic fantasy existed and i was about to give up fantasy as genre cause the ones i have read from so called great writers hadnt impressed me.
DG style is brilliant, great characters,story,awesome battles. I think his strenght is that he makes many characters you connect to easily. Connavar,Ruthain,Bane,Ring,Gaise etc were great. Another strenght is the good guys arent godly good like many other.