Felco is a premium brand but they are not cheap. Best thing is, replacement parts are available.

Here is a link that might be useful: Felco

The Main thing about pruners,(clippers), is to buy a pair that fits your hand, a pair that feels good from the start in the store. Get the wrong size and after a while your hand will start to cramp. The next thing is to take care of them properly. Clean and oil before you put them away at the end of the day. I have found that name brands really do not mean that much, it is the way you maintain them.
As for the difference between pruners and clippers, sometimes but not always the pruners are a little more heavy--rugged because they are expected to be cutting limbs , etc. that are bigger.