Comfort Flex Support
The Comfort Flex Support has a nice feel to it for the price. Decent support and a good amount of spring. Pretty basic construction but good value overall.
Value Select Comfort
The Value Select Comfort has a firm top layer that offers good support but is quite hard. Good value for money if you're looking for a supportive, budget priced mattress.
Comfort Flex Pillow Top Deluxe
The Comfort Flex Pillow Top Deluxe has a network of puffy pockets on the top layer which are fairly comfortable and offer good support for the spine.