Thanks for the great ongoing advice. I have managed to shoot quite a decent range of hand guns over the short time since I last posted here. I've also managed to accumulate quite a few handguns too!
I bought a SW22 victory - its a nice gun. Nice sights, nice trigger, easy to break down (but you do need an allen key to break it down and put it back together), and its really accurate - maybe I will do a range report on it if I get around to it but the truth is I have hardly shot it and that is because I found a minty Ruger Mark II Target - which is what I really wanted, and one happened to come along! It shoots just like I remember, and I couldn't be happier...meanwhile, as good as it is, the SW22 stares at me from my gun safe as I shut the safe on it and leave for the range.
As for the Glock 17, its a USA Gen 4. I don't use any backstraps as the regular handle allows me to get the best grip, and the factory sights work fine for me too. There is a learning curve on this pistol, and I think its making me a better shooter because its given me cause to concentrate on my trigger pull and reset - and the skills have transferred to some degree so that my overall shooting has improved. Despite the Glock not having a great trigger, or being the best feeling, or the most accurate, its the pistol that always comes with me to the range.
Looking back on it, while I have no regrets on the Glock, its not the only great choice out there - I've shot pretty much everything else anyone has mentioned here, and what I can say with the benefit of hindsight is that I would have been just as happy with a CZ, SIG, HK or any number of great handguns out there. They are all great guns and they are all worth trying if you get the opportunity.