Always take reviews from anyone with a grain of salt.
The Tekton may sound great to the reviewer, but that does not guarantee you will agree.
I'll bet that if people are given a choice of any speakers they want for free, most people will choose the B&W 800s over the Tekton.
Does Tekton offer a return policy? If you don't like the way they sound in your own room, can you return them or are you stuck with them?
There are pros and cons to B&M and ID companies.
ID speaker can sound great and measure great, and some are better bang for your money. Some have much better efficiency (CHT, JTR, Soundfield, etc).
B&M speaker can have the benefit of more research and development and the trickle down effect. For example, the technology and knowledge that went into the $70K JBL or $22K Salon trickles down to the lower priced Revel. The R&D of the $160K KEF Muon trickles down to the lower priced KEF. The $190K Focal Grande Utopia trickles down to lower Focal, and the $100K Dynaudio flagship trickles down to the lower Dynaudio as well. Some of these speakers may have huge discounts ($1260/pr for KEF Q900 or Revel F12). Even better bargains as used speakers.
Anyway, take all reviews with a grain of salt.