This is not a "knock the Piper, pump the Cessna" exercise, to fly them, they are both fine aircraft types. But, it is an apparent reality that ownership choices MUST include consideration of maintenance and repair opportunity, for long term utility and resale value.
The maintenance and repair opportunity applies equally well to both Cessna and Piper. Ask some owners about the Cessna SIDS programme. There's more than one or two Cessnas permanently grounded because of SIDS.
Provided you do your homework either a second hand Piper or Cessna will serve you well, as will some other types.