From a buyers point of view ...you need to consider price, quality, ease of installation, availability.....Get your local Wholesalers involved if you've got quantity to order, they'll sit up and take notice ......get 2 or 3 involved.......maybe an independant and a couple of nationals....and let them know you've gone out for prices...see if you can get a project price for branded stuff such as Ega & M/Tufflex ....make sure you price the accessories as well as the Trunking (you may find the price of Trunking to be reasonable....only to find the price for corners / inserts etc.... to be extortionate)...maybe offer to do a deal whereby your supplier gets it in and then invoice you, as and when you call it off (that way they are guaranteed the sale for the whole project).......don't discount Own Brand stuff such as Newlec or Sector ......they are both manufactured by MK / EGA .....Just older versions of Prestige.........another tip if you use Ega Premier Trunking...NCT 1050 etc .... Newlec and Sector own brand inserts are identicle to VTS6025's & VTS7025's and you should get them for half the price.