I'm with Winnie on that one.
Tried Alpha, not very robust but comfortable.
Tried Gentex SPH4/5, very robust but just too BIG. Head gets stuck in some single place cockpits!
Settled on Gentex HGU 33, with leather interior. From
www.flightsuits.com. Their service is very good.
www.watkinsaviation.com does a line in used surplus.
Buyer beware on used - they may have been dropped or gone for a swim. Is it worth the risk? I used one - saved me from a nasty bump on the head, retired it straight away.
Also you may want to check out the cost of replacement visors before you choose which configuration.
Good luck