I have messed around with balisongs since I was a kid. Found an old one when I moved about a year ago and have taken it back up. Bought a cheap practice one and the one I found is also cheap. Looking to upgrade to a quality balisong.
I love the Ballisong. With training, it's one of the most versatile knives on the planet, and does things that other knives can't.
Can't go wrong with Benchmade or Microtech.
Take a look a Biegler Bladeworks if you really want to splurge on something nice. The maker is a PTK SMF practitioner, and really makes some nice stuff.