Which toilet seat to buy?

I'm having clients complain that their new toilet seats feel cheap. :-( We are using a Kohler plastic seat that costs $60 - $75 so no cheap seats here. When we ask our clients they are saying they are wanting the old composite seats. You know the ones.....they crack & pinch your bottom!!? The plastic seats we use are designed to flex with different weights & sizes of the user. Better engineered & typically don't crack. The composite seats cost about $20.