Are they worth £70 and do they hang nicely handle down?
I like mine. It hangs nicely, and is a good size - not too small, not too big. I've had trout to 5lb+ in it no probs. Being able to weigh your trout without handling them is great.
But... on the negative side:
£70... it's a lot for a net, and then you still have to add a few gadgets to make it fishable.
The standard knotless bag is a pain. It gets snagged on everything, it's too long. Mine got tangled up in the car boot before even going fishing. First thing - buy a replacement net or be prepared to curse a lot. (i bought a standard coarse fishing rubber net and fitted that). Or you can tie a knot in the bottom of the net to shorten it.
To hang the net, you need to add a magnetic release thing to the frame, and a lanyard to the handle so you can let the net go without losing it.
I added a magnetic release to the frame (exactly opposite to the handle). I had to use a cable tie to fit the magnet's split ring to the net frame.
The other half of the mag release is attached to the D-ring on the back of my fishing vest with a split ring. Minor contortions to re-attach after catching but do-able.
The handle of the net is attached to a coiled lanyard with dog clips (I bought the Caimore coiled lanyard from eBay and it's been excellent caimore coiled lanyard).
The other end of the lanyard is clipped to a d-ring that I slipped onto the side strap of my vest. The net by default comes with a piece of string to attach to yourself.... hmm. Plus the standard connector on the net handle is odd.
So, great net, but needs a lot of tweaks to make it usable. Having written this, surprised, i'd forgotten how much effort I had to go to to find the right add-ons to make an expensive net usable!
Euan - I know you like customising things, so this is probably just up your cup of tea