Budget DNS hosting with large amount of queries?
I'm looking for budget DNS hosting (no, not Cloudflare) to host about 20 domains. I'm using Zerigo's free DNS service on 2 domains right now (50k monthly queries) and have had 13k queries in 3 days. I was thinking of getting Zerigo Essential 1 (or even Plus 1) but I'm not sure 1m queries will cover it to be honest. These 2 domains are not the highest traffic domains I have - probably somewhere in the middle. Are there any other quality DNS hosts on a low-end budget?
And no, I'd rather not host my own DNS servers ;)