I have the argo type one that your talking about, only in green (did have a blue one, but let that go with my trailer tent)
I find mine to be quite stable we are a family of 5 3 adult size and two smaller children and have not problems when the bigger of us are using it, have quite often played poker around it in the awnign of an evening.
To be honest I wouldnt spend the money on a more expensive one as they all seem to be of the same sort of quality in construction.
hi tina,we too bought the argos ones,had to get 2,been ok so far,little ones think they`re climbing frames,jwe found they sink a little bit but so far,so good,think they`re £24.99.
I've got an Outwell one. Problem is even though the frame is aluminium there are some crucial parts that are plastic. I hate it when manufacturers do that as invariably the plastic parts will fail first making the entire thing useless.
Apparently you can't get a really good quality picnic table for love or money...