I have the "Vapor match shirt" (£90) and it is nice, real nice. Looks quality. But if I am honest I did expect the shirt to "breathe" a bit more than it does.
While it is nice, as the material is different, it is not the quality of the 09-10 shirt which was perfection - apart from the badge (and no, I am not talking about the shitty eagle compared to our old/new beautiful badge). The badge in this Vapor shirt feels good (meaning you can't feel it) to your chest unlike in that 09-10 (after few washes tbf).
Also, it IS a bit more fitted which can be good or bad depending how you look at it, ha.
If you have the chance to go to the City store to see/try the shirts and the materials yourself I'd say do it but if not, I do think the £60 shirt will work for you mate. I am not convinced it is £30 much better than the "stadium shirt".
Hope this helps