I haven't used any of the standalone inductions, just what's used in the files so I'd guess my recommendation would be whatever one is most similar to the one used in Victorian Girl and Cardigan's other files here.
The effects happen immediately after the file has finished and only last for 15 minutes, so you won't be mewing for very long ;) I sometimes listen to files after i've downloaded just to get a better idea of what they're about before i try. Even if it's not quite your cup of tea (or saucer of milk) ...
I'd go with what's been said. I've tried different files over the past year and had better success with some than others, sticking to one or two files at a time and certainly nothing contradictory in effect. One of my first successes was LRHousecat - you might want to give that a go and see if it wo...