Hey, I remember that you Phil were mining with CPUs, have you dropped it ? I am considering to buy a rig, and I am not sure whether I should pick a simple Celeron or an higher-end one to mine ZCash.

There are enough CPU-only coins. Try ZOI, MAGI, VRM, HEXX. You can check your possible profitability by using YIIMP Bench web-page. I think CPU-mining is a long term investment so choose a coin, mine it for 2-3 month and forget about it for 2-4 month and The profit can be good.