any good? fed up with the monster, double sided 25k dartmoor map
Yes - the best maps you'll get anywhere imho.
They're OK. The tend to show more terrain detail than the OS, but they can take a bit of getting used to - especially as you end up swapping between the two (Harveys have limited coverage). I like to use them when I can.
this one covers where i want to be. worth a punt i reckon.
Different from OS, in the way that they show detail, so they take some getting used to. But I think they are better for outdoor activities. Also they are printed on waterproof paper which makes them far less bulky than the laminated OS equivalent. I always use them in preference to OS when there's a choice.
the best maps available! Especially the bmc mountain map series
peak cycling map has some nice routes marked as alternatives for road outings - big but is that no 1 in 6 or steeper markings - got caught out at a cafe stop reading map out in direction rarely go - nice looking way home - then a couple of huge long hills - not that i hate hills just that i was on a schedule to get home
The scales and contour intervals can be a right head-f*ck though!
I like them a lot - bought a job load in a sale a decade or so back, and really like how they are 'outdoor sport/access' focused, rather than visitor focused - better for terrain/details etc, clearer to read some stuff from, I like the fact that as standard they are waxed - not fully waterproof, just much much more water resistant.
Can be a faff swapping between OS and harveys - esp. contour spacing!
If it covers your area, go for it, I think they are better than OS.
I've used them to navigate myself along 80 to 100 mile walks, like Hadrian's Wall, and found them to be excellent. And a lot easier/cheaper than carrying 4 - 5 OS maps.