Copart: any experience of buying from them?

Hey all.

I'm considering buying a Cat S write off from the salvage auctioneers Copart. 

The intention is to break it and use some parts to tidy up my existing Octavia.

Has anyone bought from Copart before? How was that experience?

I'm reading quite a lot of negativity elsewhere online, but much of it concerns the US company.

Thanks in advance