The Zildjian "I" series has replaced Zildjian's entry line. You can get hats and a crash ride at Sweetwater for about $180. They sound pretty darn good, and you can get a full new set for a little over $300. But, I'm a fan of buying used. I buy on ebay weekly. I have for 20 years. Selling on ebay is a different story.
Look, you might be happy with zbts, sometimes it works out for people when they have a specific sound they want. Like #roncadillac. . .But I don't think that's common. There's a reason you ALWAYS see these cymbals for sale as a set with a kit, it's an easy way to get rid of ALL OF THEM.
You already have an ear, you obviously Know your Pearls sound bad. Your basically moving up one level maybe.
2-piece B8 Cymbal Set with 14" Hi-hats (Pair) and 18" Crash-ride - Traditional
www.sweetwater.com
There are other options available. I know your budget isn't huge. Good luck