So, I saw many people got excited over spring’s Trade-In because supposedly there are some worth to buy tanks, which you think is a “must have” or a really good tank?

Personally I want to buy one of these but can’t decide:

Bisonte C45 112 IS-6 TS-5 M-IV-Y Turtle I

And I want to ask which of these 5 are kinda fun to play but also profitable to make credits? (I’m open to more t8 suggestions)

And besides this, what will you buy?