For C1 and NS static:
Living in c1 means you cannot make isk by ratting sleepers, trying to Plantery Industry instead.
A NS static means its hard to find a quick way to HS (about twice a week before ccp increase wandering connection).
For POS and citadel:
Citadel consumes less fuel and is able to fit many service modules but more expensive and drop more loot.
POS consumes serveral times fuel but stronger (more stronger EWAR and auto-shoot) ,cheaper and no loot (move your stuff before the shield offline).
It’s difficult to summarize their difference in a few words, but if you just want to find a place where you can enjoy living without any disturbance (and dont need citadel’s service modules), as I think, POS is the best choice.
I used to live in a C3 with NS static for three months. Do PI, scan signature, wait for the refresh of signature, stare at my ship in a daze and get out of the NS static to have some fun (scan ded complex and finish it). That’s a wonderful memory for me.