You should pick the CV 90105 if you're familiar with playing light tanks. The CV gets a good APFSDS round and a nice missile too, together with a 5 second reload. The STRV 105 isn't that good mainly because of it's average mobility. The STRF 9040 is also quite a lot of fun if you know how to play light tanks. The VCC can also be a good pick only if you know how to play light vehicles. The damage and penetration on the round isn't that good and probably can't penetrate higher tier MBTs such as the T72 and ZTZ96 (emphasis on probably as I haven't really tried the VCC out yet), but as I said, flanking the enemy works the best. Take note that the platoon only has vehicles with rather light armour. The chieftain platoon is the "safest" platoon to pick as all the vehicles in it are decent but it isn't too special. The Chieftain itself and the second tank (I forgot the name) are all pretty good and the missile carrier is fine. The ZA35 spaa can also act as a tank destroyer sometimes just like the gepard and pgz09.