You see a lot of Pro-E because it was the first highend SW to run on PC, but besides that there is no comparison betwen CATIA and Pro-E in performance.
Free form surfacing in Pro-E is very recent feature and in Catia this is from the beginig.
If you can't afford a Ferrari by VolksWagen!!!
I've taken courses in both and while I found CATIA V4 (Unix) easier to use than Pro-E it less likely to offer you employment opportunities.
CATIA is usually only used in the transportation industry, autos and aircraft design, due to it's high price. FYI: Also most of these companies are still using V4 and not V5 and they are in no hurry to upgrade due to costs and the retraining required (because it's more windows based).
Unless you are trying to work in these fields I would stick with Pro-E (unless CATIA's price becomes equivilant to Pro-E).
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