I loved the following:
Montecristo: #2, #5 (nice, small smoke), Petit Tubos (same as Monte #4, but sold in an aluminum tube)
Cohiba: Robusto, Siglo VI
Partagas: Series D #4
Romeo y Julieta: Churchill
Cohibas seem to the most expensive, and unfortunately I encounter too many problems with them for the price. They tend to be packed extremely tight & can have some seriously frustrating draw problems. Out of all the Cohibas I've smoked, I've settled on the two listed above (along with any Limitadas you can find...they had a great Piramide for 2006...one of the best I've had).
Montecristo seems to be the most reliable for me. I love the taste, the prices are somewhat more reasonable and they don't have too many draw problems.