Which lightweight wheelchair manufacturer is currently has the longest warranty on their frames? Also who would you say is making the best chairs at the moment with good customer service?

At the moment I am thinking Tilite zr or zra but I am unsure now that they are owned by Permobil.

Wolturnus I have heard make good chairs.

There is rgk who I have bought from before but they are owned by sunrise now, don't know how that has affected their service and quality of product.

There is Oracing where I got my current chair, but they no longer have a supplier in the UK.

Others I have seen online Kuschall, progeo, ariawheels, Lasher, box, Offcarr, ki etc

Anyway let me know of who you would recommend at the moment and why?