Do you have party rocking step2? That one isn't to hard to Lean and it is really fun.
LIC was hard for me to get into. I do not know why! Really love step but that one was not one I could learn for some reason and I can not put my finger on it.
I don't know what all you have but my favs of Cathe are low impact circuit,
Body max2, PRS 2, and step blast, step jump and pump, I also like PRS 1 even! I was afraid I would not get it but it was not that bad! It is fun really ! Hope that helps some. The greatest hits is really fun as well!