I agree with what has been said. I would suggest you have a look at some lathes and get the feel of the standard of finish as there is quite a bit of variety out there.
I don't know whether you are new to wood work full stop or just turning. If the former then keep in mind that the lathe is only 50% of the equation if you are buying new from scratch. Turning tools, a chuck and consumables all add up and should not be forgotten. A grinder is also required and one with a wide wheel is an advantage. I decided to buy a jig to help with shaping the tools when I sharpen them - not essential to start but does allow you to focus on the turning rather than wondering whether the profile you have just ground is at fault or the technique.
Also, do you have an idea of the type of turning you will want to do. If bowls are all you want to do then you may want to look at different lathes to if you really want to turn four-poster bed frames.
Sorry, more questions than answers but I hope it helps. If you haven't already, I would suggest getting in touch with your local turning club and attending a couple of meetings. Everyone has been in the position you are now and will all have an opinion.
If you want to know what I did in your place (I started last October and opted to go for the new route from a big supplier for the back-up / piece on mind that gave), I bought an Axminster M900 lathe (they are on offer at the moment for £350ish rather than £430 normally) and have been very pleased with it. In my view it was much better finished that the other clones with finely ground castings, better bearings etc etc but at a price.
I would also suggest a set of probably 6 tools (loads of posts on the web for what makes a good beginners selection) and a bench grinder (record power do some reasonably priced ones with a wide wheel in either 6" or 8") and you will be in business. A chuck can come later - keep an eye on ebay.
Above all, keep a couple of quid for some lessons. They will not only establish good habits early but short cut some frustrations associated with self / book teach!
And finally - welcome, have fun and let us know how you get on!
Simon.
(PM me if you want to phone and have a chat for any more advice although I am far from a professional!)