The Vehicles of the new "Field Testing" Battle Pass Season [War Thunder Devblogs]

Gaijin has released the vehicles on the latest Battle Pass season "Field Testing", the Object 248, the BV 155 and the T-51A! What do you think of these vehicles?

The linkies:
https://warthunder.com/en/news/7784-development-battle-pass-vehicles-object-248-heavy-tank-en
https://warthunder.com/en/news/7783-development-battle-pass-vehicles-high-altitude-interceptor-bv-155-en
https://warthunder.com/en/news/7780-development-battle-pass-vehicles-type-t-51a-torpedo-boat-en