I went with Xilo who appear to have set it up using murphx bandwidth on a tiscali tail. So tiscali LLU at exchange with murphx backhaul.
The package has a 75gig usage cap with no free usage off peak period so not for anyone who downloads too much
On ukonline I had a 4.8meg sync before they did the migration at 10db margin, when it synced up on tiscali it was nearly 6 meg with same stats, after I removed the snrm overide on my router and let it sync at 6db I got 6.8meg which held during the evening but with some small packetloss. With the packetloss it still was far more useable than VM. Without SRA ukonline was nowhere near as steady, I think the difference maybe due to INP been enabled on tiscali (noise protection). The latency is higher about 25ms but is low jitter and upstream I am back down to about 800kbit like I was before I went to ukonline.
Phil if your 10mbit is steady with VM I would stay where you are unless you having problems of course.
After I resynced I am holding 6.2mbit with no packet loss now during the night. I never got above about 5.5meg on ukonline without SRA overnight even when my line was better and in recent weeks I struggled to hold 4mbit. Its worth mentioning tho over christmas many offices are closed and they are what cause most of the crosstalk on our exchanges as both are city centre based. I will have a better idea of what it will be like long term after the first working week in Jan.