I find most brands of foam in the UK don't seem as good as they used to be. They don't seem as thick or long lasting. E.g. I used to be able to pile it high, or fill bits of gear (helmets etc) with it. If I try that now, it just collapses. Even Gillette stuff does the same. It would be nice to find a brand that works as well as I remember it.
I find supermarket "own brand" is pretty decent - if you can find it!!! I have found that ASDA seem to have discontinued their "smart price" foam which was only about 30-oddp a can. Tesco value is OK, again, if you can find enough in store......good luck