My old Aiptek was also sold under the trust brand.
I used it for a while and it's good, but the Wacom is just a better product, pen, feel, resolution. For £50 you could get a decent 2nd hand Intuos. The bamboo are the replacement for the Graphire and should be as good if not better.
£25 - Graphire 4 2nd hand
CTE-440 (A6) CTE-640 (XL/A5)
£50 - Intuos 2/3 2nd hand.
I like the idea of a Wacom Pen & Touch.
The trouble with reviews are most folks have only used the one product they bought. A £50 trust buyer is unlikely to have used a £300 Wacom.
Don't make the mistake I did and buy a cheap Wacom with no pen, the pens are rare on Ebay and as they're so damn expensive new they fetch a decent price.