Hey, glad you like it! You know, I think APP is one of these bands people cannot name although they have heard quite a few of their songs. The later records, I think they are too much sounding like the 80's (for me), but they are still enjoyable.
I suggest you listen to the full I, Robot album, although more mainstream than the Tales, I think its status of best APP album for most people is well deserved. I think it's the Dark Side of the Moon of APP (I know, bold statement!)