Both look very tempting, though the 6.7/10 for the City of the Dead on IMDb rises my suspicions....
Invasion of the Blood Farmers however looks just right! Specially when you take a look at the trivia:
* According to the director, most of the cast members worked for a six-pack of beer as payment.
* The film was shot over three weekends, with a $24,000 budget. It never made its money back.
I say, bring'em on!