Okovango,
My advice is go for the Chipmunk and then maybe do a couple of flights in the Tiger for fun and to see the differences - particularly what profile drag is all about!
As most Chippie pilots on here have commented, it is a delight to fly, once you have mastered its eccentricities.
I was lucky enough to get 170 hours in UAS Chipmunks at the start of my flying career and that has stood me in good stead for all of the taildraggers I have flown since then -mainly Citabrias and Scouts and a few circuits in a Super Cub and a Stearman.
Someone earlier commented on the Chipmunk being closer to the Spitfire end of the spectrum. I've had a flight in a Spitfire
and I have to say the Chipmunk is much more pleasant to fly - the Spit is very sensitive in pitch but has very heavy ailerons - you would definitely need two hands on the spade grip for high speed max-rate turns!