Like some people have mentioned, MVM collector sets are basically the same as Sentai's releases, just without any of the chintzy/novelty extras (coins, toys, wall clothes etc), and with slightly cheaper material quality. For example, their release of Flip Flappers didn't have the metallic lenticular finish on the box, while the art book was paperback instead of hardback. However, those are generally small sacrifices, given the difference in prices & the risks involved in international shipping, so unless you really, really want the very best perceived product, the UK sets are usually the best option.