Hi,

Price aside, what are the pros and cons of using any of these for patios? I 
have an existing concrete/hardcore patio which I want to make bigger, to a 
size of roughly 15 square metres. Which would be the easiest to use and/or 
give the best results, and is there anything (beyond normal DIY knowledge) 
that I should be careful of? I have taken care of buried cables, etc. 
Thanks.