I use Isoprop. for Tamiya and Im happy with the results I get.
It has never worked for me with any other type.ie:Hannants X,Humbrol or Lifecolour.
As for surgical spirit from past experience Id say you will give yourself a heaping helping of trouble. Getting the paint to dry past the sticky thumbprint stage could take a lifetime(if your in your teens or way past if your older) :shithappens: