I've used a Planet of the Vapes (and what a great name for a vape store) One for the last two years which has been great for the price, but I don't think they ship to the UK. It does need replacing now because the air intake holes are getting clogged up but it's been a great daily driver up until now.
Before that I had a Storm Sapphire which had a huge bowl and packed a massive punch for a £60 vape but it died on me after a couple of months so it's hard to recommend. That said if you order from vape fiend they have pretty good warranty policy and I could have gotten it replaced if I could be bothered to send it back, I digress.
In terms of vapour quality you're not going to do better than the dynavape for much less than £200. It's got a bit of a knack to it but it hits as hard as a bong when you get it right. Easily among the most economical vapes out there too a little weed goes a very long way. The main issue with that is it's kind of a pain to use outdoors/on the move as there are no batteries and you heat it with a torch lighter, but if you're vaping indoors or on your porch it's definitely worth a shot it may end up being the only vape you need.
So many people on this thread, and elsewhere, have suggested the dynavap, and for very good reason. It's around a quarter of the price of the £200 jobs and requires no batteries. Torch style lighters are recommended for heating the cap and bowl. Its' success is in its simplicity and sturdiness I think.
First 2 or 3 times I accidentally incinerated the weed to the point of it becoming charcoal which obviously is not what you're meant to do. My lungs did not thank me for that! But I've more or less got the hang of it now.
Apparently you can buy thicker caps for the device that heat more slowly and help avoid burning, if anyone continues to struggle with that, which apparently some peole do, and there's also an electric plug in docking station heating device, but that's like $200 and not really neccessary imo, if you're not really bad with heating things gently with a flame. (Most people on here probably won't be inexperienced in that area lol.)
I got the B off the UK site a couple of weeks ago. It's great. Far less smell and no smoke, compared to spliffs, and no need to add filler material to aid the heating and smoking. As I've given up tobacco I was using some smokeable herbs - mullein, damiana, and marshmallow leaf, and the state of the filters after smoking that was foul. Thick black with filthy tars and gunk, probably even worse than tobacco, so the sooner I got away from that the better!
Also apparently vaping the weed still leaves some thc, and makes the leftovers ready for edible consumption. I dont know anything about decarbing yet, so not sure if the vaping is decarbing or just achieves the same end result.
I'm building up a fair bit of 'used', but not combusted, ie just very lightly browned, weed by now, so will have to look into how to do edibles and working out the weights and quantities etc.