Skydiving Helmet (4 ppl with experience)?

Hey im looking to buy a skydiving helmet and am not sure what one i want to get. Is a open faced one better because you have eye protection anyway? Also what about one that tells you altimeter/ height? If anyone has suggestions or can help please do also where would i get one? Any other info about skydiving or equiptment is amazing, yes i have been up a few times but am new to it and love it. THANKS!!