I've used Dulux products, primer is Luxepoxy 4 White Primer and the topcoat is Luxeathane, its coming up to 5 years on my boat and still a great finish and I would not hesitate using it again.

If you can find a Dulux Trade Centre nearby its much cheaper than other outlets, as it would special order for most places outside of Dulux.

Both are 2 pak paints, and I'm far from from being a spraypainter, but it came up pretty good.