A lot of good information here and thanks to all for suggestions & recommendations.
For those of you who have been around this site for ages I know it must be frustrating when someone comes along and asks what might seem a silly question which you know has been asked a gazillion times before, but please bear with us newbies. Like someone else earlier in this thread, I am a frequent poster elsewhere on the internet on a different subject - flying, in my case - and I know there is sometimes the urge to tell the newbie to go do his homework. I've found, however, that that sort of response tends to alienate people, and it seems a pity to do that to someone who might, with a little nurturing, one day turn out to be a great ambassador for this activity which is, as yet, so new to them. Thus, in person and now on the internet, I find myself still answering the same questions from fresh-faced newcomers to flying that I have now been answering for the best part of twenty years, giving them information which is, for sure, available in books, magazines and now - with the aid of the "search" button - on the internet, but now and again I find there is some fresh slant I can give to the answers - either because technology has moved on or, rarely, because my knowledge of that particular area has developed - and so I will go on trying to answer those questions and I am likewise very grateful to those of you who take the time to do so in this web site to numpties like me who are comparatively new to this wonderful game of breathing underwater.
PadiGirl: With all the air at the back, what sort of attitude does the Ranger give you on the surface? It looks as if it would push you forwards - do you find that and if so, is it a problem? What about the Ranger's integrated weight set-up? The adverts describe it as a "Ripcord" weight system - is this one of these new-style ones with a spring-clip or pinch-clip system to keep the weights from ditching accidentally like the Seaquest Sure Lock system, or does it rely on Velcro? I ask because I've never seen a Zeagle BC (we don't see a lot of them in dive stores this side of the Atlantic) but after your glowing recommendation I felt I had to look at the Zeagle website. It looks like a lovely BC, but I'm just curious about the air distribution and the weights. Thanks.