pease

We're thinking of flying business (Club World I think it's called?) from Phila to Heathrow. We've never flown on a plane with those completely flat seats. Does everyone find them comfortable? Main thing I'm confused about is the flying-backwards thing. I know I couldn't manage the trick, but my husband thinks he could. But we don't understand how it works: i.e. when we're sitting having dinner or whatever, are we not sitting next to each other?? One person is sitting forward, the other backward?? Isn't it difficult to feel "together"? Does one have to twist one's head in all sorts of crazy ways-- I mean to feel as if one is "with" her partner? Are these kinds of seats mainly for business travelers, who usually desire to be "separate"?
Also: How do those (much less expensive) World Traveler Plus seats compare?
Thanks very much for help-- we're oldsters, but pretty much newbies to anything up from coach flying.