The difference between hardware and software AES in cryptonight isn't that huge, just some ~10% difference, its still the best algorithm to mine on your cpu. If anything, you can try overclocking your memory since despite its premise, cryptonight doesn't really fit in L2 on most processors in windows and hence is heavily bottlenecked by memory speed.
Ok so Cryptonight it is, now what?
XMR, AEON or XDN?
At the moment i'm mining XMR, should i move to AEON?