The highest display resolution of the Sigma 24+ is HD Ready. That's 56% less display resolution than a Full HD television, which is the most common display resolution.
An HD Ready HD type is in fact the worst display resolution amongst all new similar spec televisions.
The best display resolution across similar types of television is Full HD.
Alternative HD ready TVs currently available that you might want to look at include cheaper TVs such as the TELE System Palco24 LED06V, or the Lenco LED-2421 (£181.09).
If the display resolution of this Dyon TV is too low for you then you might want to look at the Philips 22HFL2819 (£169.57) (Full HD and cheaper), the Samsung HG22ED470 (Full HD and cheaper), or the New Majestic TVD-224 (Full HD and cheaper).