Just watched Beatles Love yesterday and it was awesome. I've seen Ka & Mystere and Love is better than both of those. It is non-stop action and there's not really a bad seat in the house from what I can tell. This show is great even if you are not much of a Beatles fan at all. As usual, it is a Cirque show so the acrobatics are amazing.
Tip 1 - get there 30 min early so you can get a drink at the bar, otherwise the line is too long and you won't make the show. They close the doors and won't let you to your seat even.
Tip 2 - take some pictures early before the crowds arrive. After the show is over it is a mob scene.