My favourite teas right now are Paromi Coconut Almond and Harney and Sons Black Currant. Both are flavoured black teas. As for green, I have tried many from all over the world and the absolute best is Boseong Woo Jeon tea from S. Korea. Best brewed in water heated to 185 degrees, brewed for 5 minutes (I like it strong, but even strong, this tea is mellow) and drunk at 118 F. It is very hard to come by where I live, even online.
I used to LOVE Twinings pink grapefruit, mandarin and lime, but they discontinued it years ago. :facepalm: It was a tisane, not tea. Same with yerba mate, it's not actually tea (camellia sinensis), but it's interesting.