Car seat

[Coligny]

To replace atrocious kotatsu floor seats (like chair without legs) actually bolted on my deskpits, i was looking at amazon jp second hand car seats. Coming with 2 choices sort of fitting my criterias.

1 from a Nissan 300zx fairlady

Http://amzn.to/1yV23H5

Or a pair from a Mazda sumthing

http://amzn.to/1yV2eSG

My experience being limited to... Avoiding Nissan Note seats that are nothing short of atrocious. And since it's for home weird-use. Is there any known redflag with those seats/brand/models ?
Bolt pattern is irrelevant, resistance to cat scratches meanwhile...