Just sharing my results of looking for Harmonizer & Wah plugin:
I was looking for CPU friendly, low latency, budget friendly and something plug n play. After lots of trials and errors here’s what i have settled for…
Wah : Kuassa Wah- 25$ Efektor WF3607 Wah Filter Guitar Effect Software | KUASSA
Harmonizer : Berry Amp (has built in harmonizer)- 15$ Audio Assault | Audio Assault Legacy Products
40$ thats it! light weight, out of the box, very user friendly UI… Try it!