Which amp would you go with

The Arcam has both phono and digital inputs. Do you need those?

The Rega has Phono only I believe, no digital.

The Vincent is a hybrid design having a tube preamp stage and has digital input which is stated as for CD playback. Not sure the entire meaning of that, other than likely PCM only. I once owned the Vincent SV 226 hybrid and thought it to be great. Wish I never sold it. The SV500 has the lowest wattage rating at 50wpc. AA does have a return policy.

I believe the Music Fidelity is line level only providing neither phono or digital inputs. The price as offered by Upscale makes it a good deal. Seems to be a very robust amp for the price. 

It comes down to what features you need and how each best interacts with your speakers to provide the experience you wish for. All are reasonable options.

Thank you for the replys.   I dont need phono or digital outs or a DAC. The Musical Fidelity has everything needed at this time and Is the smart buy.
The others are perceived upgrades, particularly the Arcam in its pairing with the XT6F according to others.
The Vincent has the lowest power rating but its hybrid tube/SS design  should allow lower power usage to get the same volume so I thought the 50w would be plenty for the 90db sensitivity of the Tannoys.  I might be wrong there and Id prefer to pair a British amp with these speakers.  The Vincents dont get a lot a coverage but the people that have them love them.   The gentleman I purchased the Oppo from recommended Vincent but I dont know exactly what he was running in his system.
I will also look into the Croft Integrated.

The smart buy is an integrated. Variable out is no substitute for a pre-amp. Separates make no sense below the mega-buck cost no object level. Which you ain't. No purchase is forever. A separate power amp ties you into a weak position by limiting future options. The right integrated will sound better now, and pay big dividends later when you go to upgrade. Which you will.

Musical Fidelity like most suggest.