The 3 that are popular are:
TUSL2
ABIT ST6
Gigabyte GA6OXET
They each have some ups and downs. The TUSL2 does not have 1/4 PCI dividers below 133 MHz FSB. This can be a very big problem depending on the CPU you are trying to overclock. The 1.0A will easily make it to 133+, so its not an issue. If you were trying a C1.2, it would not ne a good choice. The ST6 has the best PCI -> FSB speed control, The GA6OXET has the best Vcore range. It also has 1/5 and 1/6 PCI dividers.
For the 1.0A, any of the above should work well. For a 1.1 or 1.2, you have to be a little more careful.