Hi,

I live in France and would like to know the best thermal and acoustic
insulation product for my attic.  Specifically I am interested in two
thin ?reflective? insulation products and how these compare to each
other and how they compare to the benchmark 200mm of Rockwool
insulation.  The products are:
i)  Triso-super9 from Actis (http://be.actisisolation.com) and
ii) Airflex from Kdb Isolations (http://www.kdb-isolation.com)  

I have samples of both reflective products and know the structure of
each is quite different.  I have some background in how these products
work (eg by reflection) in contrast to traditional insulation (eg
Rockwood) and understand that the traditional (standard) R value for
rating insulation may not give ?fair? results when applied to
reflective materials.  I do NOT want more of this kind of information
and do NOT want to read debates about the relevance of R values to
reflective insulation.

What I want to know is how do the THREE products (Trisosuper9, Airflex
and 200mm rockwool (benchmark)) compare on:

1) (Important) Thermal insulation ? not just R values but realistic
measures of how these products compare in normal house roofing
situation.  Specifically I want to know is there a real performance
difference between the products ? is one a better insulator than the
others?
2) (Important) Acoustic insulation - specifically for traffic noise. 
I CANNOT compare acoustic db ratings at different frequencies.  I
don?t even know the frequency of ?traffic noise?.  Specifically I want
to know is one product better at blocking traffic noise than another
and how do they compare to benchmark 200mm Rockwool?
3) (Not so important) Price (per m squared in euro) ? does NOT have to
be exact but roughly how do the products compare price wise?
4) (Not so important) Ease of installation ? specifically from people
who have actually worked with the product ? not just a blar blar from
the manufactures website.  Are there any particular problems with
either reflective product (eg is cutting the Airflex parallel to the
heat sealed seams ? a problem?)  I am aware that installing Rockwood
is a nightmare.
5) Any other info relevant to favoring one product over the other.

In summary I want to know which reflective product is best (ie thermal
insulator) and whether one has better acoustic insulation against
traffic noise compared to the other (and in general how these products
compare to traditional 200mm Rockwool.  I dont have so much time so
dont want to read hundreds of links - consise info is better.

Relivant information in French or English is ok.
I have read the three results (French) comparing the 2 reflective
products turned up by googling [triso super airflex] but did not find
those particularly useful.

Thanks in advance.