Phil heres a job i did the other day using chemspecs woodsolv, its a really good way to renovate instead of restore a wood floor. The picture doesnt do it justice it looked great. However you do need to handle there expectations, they aint getting a brand new perfect immaculate sanded finished floor.
But this is where it has its place, its a cheaper, easier, quicker less hassle alternative.
Best of all its dead easy ( I can do it)
The tapes only there cos i had to do half a room and come back next day to do other room.