Let's all weigh in on this.
Please vote, but give a reason please for your choice. I already see you working, TNC. Frontiers does not include Only the Young and Ask the Lonely; even those two melodic masterpiecs were written for the album, or in the time era of it. My guess was you would say Frontiers

Let's hear it.
My vote goes for Generations, followed by Escape, then Frontiers.
Faith in the heartland, The Place in Your Heart, A Better Life, Butterfly and Beyond the Clouds all possess beautiful melodic axe work.