Recessed shower valves are harder to install but look certainly neater in design and are better in performance. Why I hear you ask?
The Crosswater Totti thermostatic shower valve (left) is a nice example of a crosshead shower valve with a ten year guarantee and will function well right down to 0.2bar pressure. available from tapstore for £252.00.
I also like there Bristan Artisan shower at only £99.00 it is a bargain it comes with a 5 year guarantee and is thermostatic as well the handles and front plate are not as good a quality as with the crosswater valve but for less than half the price who would worry.
Both available from Tapstore.com