first of all, make sure you know what exactly you need. those panels, like all the panels for acoustic treatments, are not made to soundproofing a room. the purpose is the acoustic treatments inside of it. do not expect to isolate your place (for this you need a different solution).
the t.akustik PA-S80 is a good product that will help you to prevent and correct the acoustic inside your studio recording or your hobby room.
the size 60x60 is a good compromise between the really big 100x100 and the too-small 30x30 panels. the foam is good, not too soft and the 3cm of the base allows you to absorb a big gap of frequencies
the pack of 8 is a good solution for the first acoustic treatment in your room. later you can buy another pack and correct (if you need) the acoustic more precisely.
they are packed well, one box just for the panels, so don't worry about the delivery.
this is a product made by someone for thomann (I believe they checked the quality before applying the brand).
buy it, if you need acoustic TREATMENT.
note for thomann: I think you can do more than just sell products with your brand, especially in the UK. I will be happy to work with you if you decide to open a warehouse in UK.
