Neil, Jason, thanks for the replies and also correcting my typo in the title!
The SX3.5DZP was a contender but I went for the wider table and larger throat with the SX4 as its more suited to what I will do with the machine. The SX4 also has a 1500W rather than a 1000W motor, both claim to be Hi-Torque" we shall see.
Due to some difficulties with the first mill from Axminster, the one I have is a replacement and has also had some issues that I have now corrected, I have been offered a voucher to spend with them, hence the reason to consider the power feed.
Back in the day when I was on a mill, late 70's, they were heavy production machines and I don't expect to be able to do those type of cuts/feeds/speeds with this one, I have dome some light work on cast iron and it seemed to cope well with a 50mm face cutter and I did it on speeds as I remember and a hand feed that felt about right.