@RandomMess
Watching with interest, need to replace our laminate which tells you something!!!
What are the differences between LVT and click LVT?
From what we gathered when we looked, standard LVT is glued down to the floor whereas LVT click is in planks like with laminate that "click" together.
Because of this you can use an underlay with click that makes it softer underfoot than standard LVT which is glued down directly onto the floor below. Long term, this does mean that if you ever wanted to replace the floor, with LVT you'd probably have to go over it as it's an absolute bugger to get up. We found this out the hard way when we tried to get up the LVT that was already down in the kitchen when we moved in. Even with an industrial flooring remover we hired we had no success and ended up having to go over it with the LVT click as we didn't want to have to screed the floor again.
Talking of which, our flooring guy would not even consider laying LVT standard without the floor being screeded first. With LVT as it's glued down any minor imperfection, lump or bump on the original floor below would show through, so that's potentially an added expense if you also need to bring the flooring below up to standard before you can put down LVT.
Click has the advantage that the floor beneath does not have to be 100% perfect as it's a "floating" floor. Although as it's a floating floor, it does expand and contract with heat or changes in temperature, so this needs to be taken into account when laying and you need to leave a small gap around the edge of the room, a few mm to account for expansion.
If you're going for a tile look rather than wood, with LVT you can add feature strips too I believe to look like grout, so a potentially more realistic look. If you're after a wood look, we think our click looks much more realistic than the LVT the previous owners had down, but that may be the difference in style/ product progression in the last 7 or so years.