They are very capable aircraft in the latest Seneca Five version which is wastegated turbocharged and intercooled.
I flew a demo with the Seneca five twin for a potential buyer against a Malibu Mirage for the then main Piper Agents at Bournemouth.
The Seneca Five beat the Mirage up to 20,000 feet hands down. Low level it was showing 1400 fpm! Even at 20,000 feet it was still climbing at 700 fpm albeit we were on oxygen rather than being pressurized.
I have over 2500 hrs on the Seneca Fives and have flown them in every condition imaginable, day night summer winter!
A real mini Kingair.
They are very forgiving aircraft which will deal with the shortest of strips and are far superior to the Seneca 1, 2 3 or 4!
Pace