My first pair of zills were cheapies and it didn't take long before I grew very dissatisfied with how they sounded and felt. I asked around and my teacher recommended Saroyan. Some of my fellow students also had zills from Turquoise that were nice. I ended up going with the Saroyan Nefertitis, though, and I love them! They're very reasonably priced and they're very nice student zills. Good size, good weight, good tone. I've been taking a zills class all summer and I'm looking at upgrading a bit now. Of course, like hip scarves and anything else dance-related, I want every set of zills I see now.
You will definitely want two holes--like slinks said!!!