Has anyone got any comment about auto smart silver seal protection.For paintwork and upholstery? For and against please

There's a comparisson of sealants here:

http://www.clean-image.co.uk/paintsealant/paint_protection_summary.htm

I have Diamondbrite on my Fabia. It gives a good shine, and reasonable depth, but I can get better results detailing the car properly myself - and it gives me something to do on the weekends! Something like Klasse All-In-One, Sealant Glaze and a wax over the top would give better results and be more satisfying.

If however you dont want to spend the time on maintaining the paintwork yourself then I suppose something like this or diamoondbrite would be alright - just be careful if you apply them yourself as I made some serious swirl marks by putting on Diamondbrite even though the car had just been washed, twice, and is always kept as clean as possible - god knows where the grit or whatever it was came from!