Some of these vehicles I have actually seen or own (these vehicles are *). The Russian vehicles are actually by Premo, distributed by ROCO

APC Hobbies (1 -804-973-2705) 9-9 M-F 9-5 Sat (EST) has advertised the following:
(1206) 1931 T-26 ($5.25) - two small mg turrets
(1207) 1933 T-26 ($5.25) - one turret with gun
(1208) 1933 T26TU ($5.25)
(1209) 1937 T-26 ($5.25)
(1211) 1931 BT2 ($5.50) has 3 mg turret -
(1212) 1933 BT2 ($5.50) has main gun
(1213) 1934 BT5 ($5.50)
(1214) 1936 BT7 ($5.50)

Squadron* runs sales on the following occasionally:

(PZ0001) T-35/33 ($3.99) 2-BT5 turrets & 2 T-26 & main turret
(PZ00002) T-35 /35 ($4.99)
(PZ00003) T-35/38 ($4.99)
(PZ00004) T-28/35 ($4.99)
(PZ00006) T-28/38 ($3.99) 2-T-26 mg turrets & main turret
- - (1 -972-242-8663) 8:30 -5:30 M-Sat (CST)-

There is a importer in NY that carries quite a bit of their line at very good prices.
hftp:\\web.idirect.comVrocio\roco\indexmt.htmI

Lugging plastic around is a lot lighter than anything else out there. This does not matter if the models do not look good, but these are nice!