World of Tanks

T-25/2 wasted 23,900 XP... or E4 or E3 ?

2:01 pm, August 23, 2014 so are there any hidden advantages to spending 23,900 other then +10 Pen and opening up the T28 proto? maybe some soft stats that are not listed? or just basically waste 23,900 XP for +10 PEN + open [..] View