Couriers are all pretty decent when they get things right. They can be very speedy and the people who work for them are often friendly and polite. But IMO the test is how they handle things when shit goes wrong.
Evri for example lost one of my returns. I had all the receipts, drop off location information etc. I completed their claim / investigation form 3 times over the course of a couple of weeks and never once got a reply. At that point the retailer just gave me a refund so I didn't bother to follow it up. But I certainly wouldn't use them again if I had a choice.
This is the only recent experience I've had of a courier service going wrong, so I have nothing to compare it to, but their response couldn't be much worse.