My favorite sativa is probably the old school Jack Herer I grew many years ago. I'd imagine that it's still probably as good as ever, but I never really tried any of the Jack from seed banks. I did order a couple packs from Sensi, but the Jack I grew for many years was not from a seed bank. The Brother's Grimm C99 is another favorite. I'm honestly not sure which I like better. The NLxHaze is another one of my favorites (Is that considered a savita? It grows like one). Again though, the NLxHaze I fell in love with wasn't from a seedbank. I tried Sensi's version and was disappointed. It was killer smoke, but it just wasn't the same as the one we used to grow.
Indicas: I love Black Domina for that knock you on your ass high. A good Northern Lights variety is always nice to have too. It has such a unique taste. Bubblegum is another great plant. So is Blueberry. The cross between the 2 (bubbleberry) is great too. I've had the chance to smoke it, but havn't grown it yet. Talk about happy weed! I just placed an order for the Bubbleberry (it's an F2, not the original but should still be killer smoke, I hope), so it will be in my garden very soon.
I could think of a lot more strains that I love, but I'll stop there.