When I moved back to the UK 5 years ago I bought the Imax bib & brace 2pc suit it did not last long before it let in water and the stitching came apart and they are not breathable which can make you hot and sweaty if you walking some distance.
I may have been unlucky but I would not recommend them
I have a korum suit, which has served me well for the past 4 years never leaked and very warm