I'm just wondering, if the Seneca is such a crappy airplane as people seem to think, why are there so many of them? Agreed, the 1 is not perfect with it's aileron/rudder interconnect and heavy in the flare, but apart from that, what's so bad about it? It handles load rather well although it has poor SE performance but then what light twin doesn't (honestly) with only 200 hp normal aspirated per side? It's a benign twin at that, I've flown it below Vmc on one engine and it didn't kill me, the Duchess apparently is not so nice for example.
The Twin Co is apparently impossible to land properly and the Aztruck is only good for hauling a lot and burning tons of fuel.
Ok, so the Seneca 1 is not so fast, but with the 2 they sorted most of the problems and it's a pretty good airplane as compromises go. Is it not one of the most built twins around?