What type of veneers is best if you grind teeth?

You say you are planning on 6 veneers.  I suggest only doing 4 veneers.  The canines are a cornerstone of the front to back transition.  6 veneers almost always look bad. $ veneers gived a big change.   In the future you can do additional veneers.  I typically advise patients to do 4,8 or 10 veneers but never 6  (rare exceptions.For grinding wearing an appliance when you sleep will protect the veneers.  Work with a doctor who understands bite mechanics, man don't.

It might not be a bad idea to do 6 veneers made of composite vs porcelain. Done well, composite veneers would look good and would be less expensive than porcelain. Down the road when you can better afford porcelain veneers, you can do them, if you need to. No matter which way you go, you should have a guard made to protect them. One other positive about composite is that is can be repaired more easily than porcelain.   I hope this helps!

You can certainly make changes on the way your teeth look with Veneers,they are fine laminates of porcelain that are made in the Lab,that will change the way your teeth look and that way your smile will look more nice and even,shape size and even color can be transformed with this solution,and can be made in only 2 appointments