I have this collection, and have found the samples to be REALLY useful.
The quality of samples is fantastic (which is to be expected, given the price), but it's the variety of sounds that really make it worth while. Some of the samples fit really well for metal and hard rock, while others will work well in country, rock, folk, or ballads. The snares range from tight and "poppy", to loose and "thuddy," and a whole range in between.