Hi Malc
Yes i'm going to go hot in the next few months. I will go the diy root as it is little outlay, then I can judge for my self if it is better than cold.
If it is then I would be prepared to spend more on a custom fit and new van, as there is little tax bennefit left in mine as it is now 5yrs old and done 42,000 miles.
Are you thinking of going hot?
Roy