I got the HQ Sweet Sixteen in November, and I am completely in love with it. You can adjust the height of the table, I have mine the same height as the cabinet my other machine is in, so that I don't have to alter the height of my chair, but you could have your table higher so as to be nearer to seeing the needle.
Also it is possible to get an open toed foot, but so far I don't feel as if I need it. It also came with a whopper of a bobbin winder, and the big bobbins hold a phenominal amount of thread, especially if you use the thinner type specially made for bobbins.
It's very good tempered for going in any direction too, and the tension seems good even with different thread top and bottom. So far, I haven't been brave enough to go above 50% of the speed she goes, but I am working up to it.
Above all, the SPACE is the bestest thing about it.
I live in Ireland, and got mine from The Cotton Patch in the UK. They were really great, and negotiated a cheaper delivery for me too. You can tell them Lesley from Sligo recommended it to you!