You will be able to change the text size to suit you, I just meant with a large TV with lower resolution the text can look fuzzy. Anyway, with 600 pounds it is a tougher decision because it looks as though some of the better 27" monitors are out of your reach. For example, this dell is over your range,http://accessories.euro.dell.com/sna/productdetail.aspx?c=uk&l=en&sku=94050&category_id=6198&first=true&s=dhs&cs=ukdhs1
I'm not sure what 27" monitors fall into that price range, so you may be well off with the TV. You may try to go to a local electronics or computer store and check out a similar 32" LCD with a computer display and try reading normal text to see if it would suit you. If it does, the TV may be your best bet.