Other people's opinions will most likely differ from yours i think.
I have seen one of these movies and could offer opinion.
Best option for you is , try renting them first, then make your own mind up.
Both movies rented and I wish I hadn't bothered, waste of money, I personally won't be buying either.
As a rule of thumb, I personally always rent a film I haven't previously seen at the cinema or on TV/Video, I'd rather not waste cash at all but £2/3 rental is preferable to throwing money away buying something I will only ever watch once.
Just watched these two last night. MP was dull. Long Time Dead was one of the best spook films I've seen for ages. There were some great original ideas for scaring the **** out of you. Wasn't one of the seminal films of cinema history, but great entertainment.