DVB-T cards are all about reliability and sennsitivity.
A Black Gold GDI card will serve you well. Note that these are sometimes known as the Sweetspot MCE cards.
An alternative is the Nova-T. As you can't mix analogue and digital tuners in MCE then the mixed tuners aren't worth bothering with.
If you are feeling lucky, then you could see whether the 2400i works for you. Many have given up on this card, and others just haven't seen the light yet

Maybe better drivers are just around the corner, but the latest 255 drivers were the last straw in problomatic drivers that made the decision for me to send mine back! Some people are still happy with this card. Note that my aerial gives me 100% quality and 91% signal strength, and a prefect signal from may other DVB-T tuners.
The choice is all yours. If you have 2x PCI slots available, then your safest option is a pair of GDI or Nova-T's.