I just had a look at this http://www.mountain-trips.co.uk/harrisons_boulder_guide.html& it looks like there's a few line around 5+ I'd forgotten. It s A (as in one) boulder though.(usual blah about taking a piece of carpet to stand on & cleaning feet and using a rag to thwack holds with).I can recommend Fontainebleau only 4 hours ish by train but probably not for a day.The southern end of the peak is do-able if you like getting up early.
I'd still recommend a seperate bit of carpet. I tend to like to position my pad where I'm likely to land rather than where the problem starts& they're seldom the same place.As for brushing - ooh controversial! There seems to be a net campaign afoot to try & get a complete ban going. I can sort of see the thinking as peeps tend to copy what they see without engaging brain. My own opinion is that a gentle brush with something soft ie lapis or boar is going to do less damge than slipping about on sandy or chalky holds & that the real problem is chalk... but if you get bollocked you didn't hear that from me.
Now which of those scenarios is best? Not everybody uses chalk appropriately but your endless evangelical preachings about the evils of chalk are getting just a tad dull.
I think a lot of the grades are very soft actually, but mainly the higher ones - below 6A I think they're ok.
Beat avoid High, which dose have some nice low grade stuff, but not worth it for £10.
The price went up (& the opening hours were cut) last year in response to their perception that climbers weren't paying & were climbing over the fence.