Stealth tank cool any way. It's nerfed, but still can destroy almost every enemy defences.
EZC wheel tank not only well usable, but now has fixed unquided shots. Also, thay has faster reload, so now that makes sense and new tactics.
Phase tank... As for me, i using it as ambush anti infantry rather than ambush anti tahk. Still old good and nice)
The main problem was mamonth tank railgun 120mm. Effective against EVERYTHING LIVING AND NOT LIVING!!! It's nicely makes demolition to building, it's have instant electric shot, it's have OP damage, it's have OP speed(associated with armour, health and damage with utilities and effectiveness), it's killing infantry without any chance to avoid death, it's effective against aircraft (at least 2750 aircraft effective against any vehicle), it's have too long range of "destruction and death".
Also, it's like there are some fix-updates that fixing this Over Powered nonsense (I wonder, i hope).
And i recommend you to try tick tank 120mm double barrel against this railgun mamonth. It's tought, deployed TOUGHT and well nice damage and range.
Good luck, for the brotherhood of Nod)