The heads Evans G1 Coated have a single layer of 10 mil from Mylar and produce a sound with a lot of resonance, open and with a lot of attack. It's rough.
You can also use it as resonant of the toms. Also if what you're looking for is an open sound for you drum, this can be you series.

With low tuning produces a cavernous sound that emphasizes the natural sound of Shell

These heads they are durable, very sensitive to your tuning and are suited to any style. They have a wide range of tuning and a very natural sound. 

Hoops Level 360

• Balanced contact in all the surface head
• Much more precise and stable tuning.
• Best quality and optimization the response
• Greater tuning range. More resonance

Evans now manufactures all of his heads with the Level 360o system with the design of hoop of the head allows to fit perfectly the surface head in the Shell. In addition, the vertical design of this hoop ensures perfect contact with the support point at the Shell, which results in an easier tuning, with a longer tone, more dynamic and consequently a better sound.

The hoop of the head Evans Level 360 has solved the old problem of the heads that do not adapt easily to Shell and forced you to force them, which made him head don't give up as i should.

About Evans Drumheads

This American brand has been doing heads since 1956 and is possibly the that more innovations has done in recent years the manufacture heads. Their constant advances have much to do with how we hear the drums today both in recordings and in directs.
Today an important part of drummers and percussionists from around the world and all styles have Evans as a travel companion in their careers.

Put the list of artists using Evans would be endless but we could put Jojo Mayer, Dennis Chambers, Pat Masteloto, Joy Jordison or Billy Cobham as an example