Hello Peter,
For what it means, both brands mentioned are most likely to have been ‘bought on price’, and particularly with Triple QX, it often comes or can come, as part of a Crossland filter combination. Crossland were once a very well respected brand, but now a bought-out brand mane exclusive to ECP. WouldI use them? No, but that’s a personal opinion.
Based on the fact that DIY maintenance obviously comes free of labour charges, I always invest the savings by only buying quality parts - at best possible prices. To this end, I have stuck with Quantum oil which is/was the VAG recommended brand, and is usually listed on EBay. It has stood me in good stead with the humble A3 which now has in excess of 160K under its belt. Filters? only Mann or Bosch unless using VAG (at discount).
Not sure of any of this helps.
Kind regards,
Gareth.