You should be fine with terry applicators, just be sure to make sure they are nice and soft. I actually use MF applicators mostly when I use paste waxes, they seem to grab more out of the wax tin better than a foam applicator. Furthermore, the nap of the MF applicator also makes a difference, liquid waxes seem to repsond well to the shorter-nap MF applicators. For liquid waxes, I mostly use my cyclo, but for the hard to reach spots, its usually a MF applictor.
(I enjoy waxing so PC is out of the question haha)