I think I have to say that the responses you got were fair - even if they werent what you wanted to hear!
You asked questions, which people answered and you asked for opinions, which you did not like, what you need to keep in mind is that alot of the people on here have had T25s (or other vans) for years and are well enough informed to part with such advice you are after - they have past experience that can only be a help not a hindrance.
Some people, as you say, dont have the money to buy new mats, we were in that same position, and I looked at the forum for other views on thermo mats, then decided to look for some second hand. within a few weeks I had brought a Just Kampers set off CLUB 80-90 for £40 from a lovely couple that sadly had to sell their van. and In my opinion they are perfect for us, and other friends that have had theirs for years are also happy.
I have found the members on here to be pleasant and courteous, and would hope the same in return, but 'having attitude' and 'being sarcastic' isnt going to help you find out what you need to know! cos believe me most the members of this forum tend to know their ONIONS!!!
I hope that whatever you decided to do is what is best for you.