Having been fortunate enough to work in TWR / APCR / and TMA at Manchester, I can honestly say that the best seat in the house was Approach radar, followed by TMA radar and then TWR. After some time, Aerodrome and APC became bureacratised (?) through being in the position of a contractor, just like Servisair or Aviance! All the fun was taken out of the job because of the customer / client relationship, and the hassle from external sources (MIA / Operators etc) was endless.
TMA work is challenging and dynamic and we retain control of the whole operation. TC controllers will tell you the same, but at the end of the day, it's your personal choice.