You've asked a very incomplete question (if it can be called a question), so the answer can only be in broad general terms.

Find one that does the job, fits the installation, meets any aesthetic requirements and is of good quality and within your price range.

I think the mortise locks are best. The same key throws the deadbolt then keeps turning to open the latch, for a one-hand entry. They have the advantage of being extremely heavy-duty and if installed correctly the first time, will give several generations of service.
Casey