How do you bind accounts?

How do you bind final accounts for clients ... or are most firms not printing accounts out now, and just providing a PDF version?

IF firms are producing paper final accounts still, are they using plastic combs, metal spiral binders, glue binders or possiby stapling with the little corner printed card that firms of solicitors sometimes use.

I'm interested to know what method people find works best and gives the best presentation.

We use metal spiral binding, but have got fed up with the high fail rate where the metal spiral slips in the binder and subsequently the pages drop out! It's time for a change.

Thanks.