Why is the weight so much of a problem?
A more substantially built machine, correctly set-up, should produce far less chatter than a lighter one, and this is the most likely source of objectionable noise. My neighbours (all properties in the road are detatched) were asking me what I was dismantling until mine was properly sorted!
Also, a C3 sized machine comes without the shortcomings that others have pointed to, and probably for considerably less money, together with superb back-up from Ketan for example (usual disclaimers).
The extra weight makes it less portable, but then who wishes to dance around the workshop with it in their arms?The range of accessories is almost infinite compared with the machine shown, and the community which has grown with these Chinese models is incredible.
It's a no-brainer in my opinion. You'll have far more fun, far more help, and have a much more versatile lathe to boot.
Mine has given me some headaches, but all due to my own shortcomings and lack of knowledge, and has taught me a great deal, which as you approach your seventies, is no small thing. I love it!
The very best of luck with whatever you decide to purchase, but DO consider all of the alternatives first.
Derek