Advice needed. what tier 1 to 10 tanks are the best?

Dakiras: Everyone says KV-1S is hella op for Tier VI, but regardless it's a fun tank to play. Depends on your play style, really. I prefer fast reload times, so heavies and arty are not really my flavour of choice, but the KV-1S just clicked. Slap the 122mm D-2-5T (had to look that up, couldn't remember the full name ) and it's just a beast.   Op? Maybe. Fun? Definitely.