I personally don't like neoprene and leather for the same reasons....in the summer, they make me sweat and in the winter, they're COLD as can be.
So I've always purchased clothe seat covers for my rigs. On my 2007, I bought a set of custom built covers by Ruff Tuff.
http://www.rufftuff.com/
They make all sorts of covers in all sorts of materials including leather & neoprene.
These pictures were taken right after installation... I'm not all that picky with my stuff - these fit perfectly for my expectations and the color match is awesome! The only downside to these - they're custom made and are a bit pricey.
I love 'em regardless!