I have an Andrew James too, it was about £100 and it has a max width of 40cm. I have found it to be ok, since getting it in Dec last year I have used it for two lambs and two pigs, so alot of meat.
However, I did notice when looking through the freezer that the seal has broken on some of the bags. And when I have been using it, although it has a setting for doing moist products, I feel like the it could get more air out of the bags if it was a better machine.
But, saying this, I am used to using a commercial machine at work which really does vac pack superbly, at the end of the day, a machine geared towards the home market is never going to produce the results you get from a commercial machine.