Rustoleum paints

hi peps,I've not long finished a shop front in the town ,a Jewllers which I did some inside stuff last year which yam yam of here kindly put some muraspec up for me,anyway the owners mate runs a paint supply company,and supplied the paint,he deals mainly rustoleum,and mathys products.never used any before,think it comes from Holland ,any you peps used much of these products ,and what ya think about them