I currently have an Boxford ME10 and a Boxford 280. in my workshop.
The X10 range outclasses the 3565 range by a country mile.
The X10 range is not much larger physically but has a bigger spindle bore, a bigger motor, greater swing, has a gear head and apart from the training lathes, an excellent gearbox. They have 6 or 9 (and possibly 12?) speeds depending on model. Mine was missing the changegears but a full delrin set can be had from ebay for about £60. They all come with 100/127 compound gear as standard. D1-3 spindle nose is (IMHO) far better than threaded. Whilst some sellers seem to hold out for silly money, they can be had for less than the cost of a decent AUD. There is currently one on ebay, well equiped with 3 and 4 jaw chucks, what appears to be a full set of changes gears and QCTP that has just been relisted as it didn't sell for the £2000 asking price.
One thing to beware of, the X10 range was never as popular as the 3565 range so whilst they are pretty bomb proof, if you do manage to break something you will struggle to buy replacement parts. If you need steadies, buy one that already has them, you will be very lucky to find any for sale and the few I have seen sellers ask silly money.