I've got the gr9's. Actually that was my first pair. I loved them. Really great value for the price.
But then I bought used mks custom Nuevo with dual strap toshis on craigslist with mks gate for 120 bucks.
To me, it's a world of difference.

But pound for pound. Go with the gr9. But ivr ridden the sylvan. They are excellent as well.

Socks