99% of all resilient floors all over the world are using a click system technology.I will say as what was being mention Inovar resilient floor without the click joint is considered as primitive technology.Its akin to a door lock without the lock sets.Evorich vinyl floor is to me by far the most reliable outstanding floor,only the price is a factor.The rest of the brands are all just tag alongs and unknown in their longevity.If budget doesn't permit,you should consider to use laminate flooring which is a bit more affordable.Just my 2 cents worth.