Crewsaver preferred, otherwise Sea Safe.
Don't bother with 150N - if you're wearing normal clothing, or anything vaguely related to heavy weather clothing, only a 275N will turn you face up quickly. Also spend a bit more and get a decent sprayhood and light.
Buying cheap is flase economy - the jacket may look similar, but most jackets fail around key wear points - not external ones, but internal material folds are a favourite wear point.
Best for ribs is a proper rib jacket (like the RNLI ILB type, made by Crewsaver) which I use pretty much everyday and gives great bump protection as well as a degree of thermal protection.
150N are really only much use when wearing a drysuit.