Well as you know I'm pretty new to air rifles, I've only been shooting a month or so, therefore not very biased.
I have used both, personally I think shooting accurately with a PCP is too easy, so much so its almost boring (no challenge).
A springer can be shot as accurately but it takes far more skill and is therefore much more rewarding.
I shot this 8 shot group in an unsupported seated position at 15 yards with my HW97K last week when zeroing my new scope (there was a target in front of it).
If I can do that with a springer being a noob, anyone can!
Edit: The coin is a