* Enduring battery life (up to 250 hours)
* Delta zero sensor technology
* Ultra low latency wireless gaming technology
* Performance/Endurance switch
* High-durability switches
Seems to have been reviewed very well.
Available from Amazon via Maplin_WebDeals or direct from Maplin (link provided). Note potential 4.4% TCB cashback from direct Maplin purchase too.
Best price it's been for a while according to camelcamelcamel and only marginally above its lowest recorded Amazon price (£38.78). Obviously this excludes Lightning deals.