This is a discussion that could roll and roll, but I do think the main thing is to be realistic about what you want from your paint, as not all paints are the same.
F & B have low VOCs and use quality pigments and bases in their paint, but that means they do not perform in the same way as say Dulux paint.
It's the plastics in paint that make them more durable and washable, also the flatter the finish the more likely it is that dirt will stick on it, that is why Modern emulsion has more shine to it than estate emulsion and why eggshell is used on wood, because it's in areas that you want to wash down (ie around door handles).
So if you want a lovely chalky flat minimal VOC paint then you will be happy with F&B.
From a colour point of view, again it's the amount of pigment in F & B that gives it that special chalky look. Yes you can get a similar colour in other brands, but it will not be the same, if you have a really keen eye you will notice the difference.
There is nothing wrong with matching a colour but it does drive me mad when people test a F &B paint then get it matched and find it's not the same.... Of course it's not the same. If you can't afford their paint why even try the tester pot in the first place? You should take their colour card and match to that and try the tester pot in Dulux or whatever paint it is you want to buy at the end, then you will get a real idea about the colour you will end up with.
I'm not saying this to be difficult or snobby just as good advice as I come across many people who are disappointed in their F & B match.
Re the washability I haven't commented on the other post as I can see that the OP is really cross and I don't think she will like what F & B say, but I do think the whole area regarding washability is so subjective and one persons gentle wipedown is anothers scrub down. I do think all of the paint co's are a bit lax in this area and they don't really say what washable/ wipeable means, but in my experience it's often tricky to spot clean or touch up and for it to not show you often have to clean the whole wall or repaint a whole wall, especially if you have dark colours (I have lots of dark grey not easy to touch up).
Decorators often don't like F & B because it's thinner that other paints and takes more work to put on.
The EU regulations changed about 3 years ago all paint co's reduced the level of VOC to fall in line with that, so all paint now has reduced level of oil/plastic etc in it even the cheapest on the market. More reg changes are coming ( in 2015 I think) and eventually you will not be able to buy oil based paint in the E U.
F & B decided to get ahead of the game and reformulated all of their paint without oil, so they will not have to make the changes in the future.
I work in a paint stockist so sell several brands but just thought I should tell you about F & B, as that was what you were asking about, hope it is of some help.