RE: Skylark 70
I'm not familliar with the Cessna, but as for the Tiger and the Skylark as a second plane, I can only say that it would depend on the individual.
For MOST people, the Tiger would be a better "second' plane, but for some fliers who are more advanced and pick things up quickly, the Skylark may be a good choice too.
I will also say that you can't go wrong with the Tiger. It's one of the best planes I've ever flown, and it's my first choice for a second plane.