Depends whats important to you really....multi-shot? real steel lookalike? decent trigger? acuracy? power?
All of the Umarex offerings are much of a muchness although the S&W would be my choice of these as well especially with its 10 shots vs. all the others 8 shots with the 1911 coming a close 2nd (although the grip safety irritates me, but can be pinned).
The Walther is pretty good as well.
The Beretta has reputation for having a slightly heavier trigger, but I've not tried one myself.
£200 puts you within reach of some fairly decent European guns and collectables as well.
Custom Crosman 2240's are another possibilty...