The House of Fraser Linea range of suitcases cases look too cheap to be true, but I have read at least one good report about them. The main obvious problem is that they seem to weigh in fairly heavy.
I am looking for a large size 2 wheeler at a sensible price. My luggage tends to get a real hammering as I always travel with a checked bag, and i prefer not to invest too much, and rather buy cheap and replace once no longer serviceable.
Best buy ever was a suitcase a bought in a mall in Cape Cod, which was so cheap that it was sold as a "1 way suitcase", not really suitable for more than getting my holiday shopping home to base. It lasted me a full 5 years of very heavy travel !