Would it be best to mine a CPU coin that doesn't have any GPUs or ASICs mining it? If anyone knows the best coin I will give you 1 free dedicated server for 1 month.
Depends on the coin. XMG/Magi wouldn't make sense as it works different from other coins. The more hashrate you throw at it, the lower the block rewards will be.
XMR/Monero might be an option for you. But, that' a point for each coin: Don't use all servers on one pool, spread it over several pools.
Check out Minergate, they are mining Cryptonote coins, CPU+GPU mineable coins.
https://minergate.com