N380UA
What's your budget, and what is the mission?
Without those, no sensible advice can be given.
My own perspective is IFR around UK and Europe, and for that you pretty well do need to be an owner.
Most rentable planes are junk and not suitable for IFR, and it's hard to find a syndicate where enough of the members agree on fixing something that isn't required for VFR.
But your requirements may be just flying on sunny days, and your budget might be £5000
