i think there's something to enjoy in all of the Tombs of the Blind Dead films
I enjoyed all of them too but I think out of the four 1 and 4 are the most watchable. While the acting is non existant, the films are chillingly quiet and the Templar Knights are very eerie to watch. Part two is quite fun at times as well (even though they shamelessly reuse a bunch of footage from the first film) and the third one has a cool haunted ship aspect to it that I liked.
Good luck on finding the third and the fourth one though. You can probably find the third one on a cheapy dvd compilation somewhere and I had to purchase a VHS copy of the fourth on ebay just to watch it.
Also Burial Ground is kinda fun too. Awful acting but the zombie make up and the incest story is genuinely creepy.