Welcome Kevin,
Some idea of what you want to make and the restrictions would help.
Sherline are popular here as a small precision lathe with plenty of accessories, not too expensive. Portable, not noisy or messy, so can be used indoors without enraging wife, neighbours or the landlord. With care! Ditto Taig, with fewer accessories.
Minitlathes are borderline. Bigger and more powerful than Sherline, Taig or Cowells. Just about portable if you’re fit. Fairly quiet due to plastic gears and DC motor. But the extra power and size will tempt you into making a mess and annoying the domestic authorities.
Noel recommends a Myford, but not portable, is noisy, and likely to be messy. Swarf everywhere and it has a total loss lubrication system. Though people have successfully contained them indoors, they’re workshop lathes in my opinion. As are all the others of similar size and bigger.
The Cowell’s is the obvious alternative to Sherline, but they’re expensive – built to last, bought by people planning years of hard work. Probably not for folk in temporary accommodation. Super-rich might consider a Schlaublin. Rare for Model Engineers to buy machines of this class.
Proxxon maybe – never touched one myself – they get mixed reviews, as do micro-lathes like the C0. Possibly bought by newcomers with unrealistic expectations who are disappointed.
lathes.co.uk is excellent for second-hand , listing out-of-production machines of all shapes and sizes. Buying second-hand can be hard work because condition matters above all else.
I wouldn’t waste time waiting for a show. It’s become unlikely machinery will be presented unless it’s new and exciting. Buyers travel to showrooms if they want a look-see. I guess most new machines are bought over the internet.
Sherline is a good choice it fits what you do and you’re familiar with their capabilities. Taig if on a smaller budget and don’t need the extras sold by Sherline.
Dave