Hi John, welcome from Perth.
Nice lil Chrissy prezzie you got there!
I also have an SC4, a huge improvement on the C3 I had before.
I would avoid the Sieg QCTP, I had one on the C3, usable but ultimately crap.
For the SC4 I went with the Dixon/Dickson style popular in the UK and often seen on Myfords, mine is made by SOBA, bought through Chronos in the UK but they do often have stock issues.
The OXA style is popular in the US and probably more available.
"The reality is that without cheap imported machines, I would be spending my time doing something less creative and less enjoyable" - Captain Jerry