Let me preface this by saying I have seen all the episodes of the BBC version. I love it. I also love the new US version.
Anyone who has read anything about this show (rather than just taking to the internet to spew fury all over everywhere) knows that the US version will be following the UK version, roughly, as far as the end of the first series. The first 13 US eps will mirror the first 6 UK ones. None of the US writers or actors have seen any more of the UK show than the first 6 episodes in order to make the show different in later episodes. What I am interested in seeing is what the US version does after the first 13 episodes, because it will be "original". Hopefully.
So far, the US version has made one important improvement on the UK version: the "ghost" rules (ie How Sally/Annie can interact with the world) are much clearer. Frankly, the extent to which other people in the UK version can interact with Annie has always been a little murky (read: plot-servicing). I enjoy the clarification of the rules in the US version. I am willing to see what else the US version does. Some things may be better, some things worse. Without giving the show a chance, we'll never know.
It is important to note that SyFy (and Space, its Canadian buddy) primarily air reruns of old SciFi shows produced by others. Original in this context means they are producing it. Yes, linguistically tricky, but so is everything in Show Biz. Bear in mind that BSG was also a remake, just more time had passed and the series was darker. Also, excellent, which gives me hope for Being Human.
I have no trouble watching both shows. Liking the US one doesn't take from liking the UK one. They both have humour, likable characters, and an engrossing storyline. If you like SciFi, Fantasy, or horror genres, give this show a whirl.
