Thanks for the replies!
Finally got a P70, pretty happy with it, no problems so far & certainly handles driver updates better than anything else that I've had before.
The negative comments I've read about Lenovo sales (farmed out to "Digital River")are certainly true in the UK though. After a week of being unable to order the correct configuration online I called their sales line, explained the situation & was offered a very reasonable compensatory discount - nice I though!
A couple of days later the docking station arrives & the next day I get an "Order cancellation" email, explaining that due to a site error that the laptop order has been cancelled & that I should reorder using the provided 5% discount voucher. OK, not quite as much discount as had initially been offered, but acceptable - only thing is the laptop has just jumped £500 at RRP......
Ended up ordering for an online vendor & had it delivered next day.