well Im partial to the flames of war website-they are a miniature company and have very simple but very effective rules and great figures-a nice game can be played in 2.5 hours...there is alot of great knowledge at this website, from people all over the world who write on battles, units, hereos, etc...
here is a simple link to some tankos they talk about
http://www.flamesofwar.com/Default.aspx?...art_id=907
this link to tankos might bring you to the main site...but if you go down to the spotlight sections there are tons of good articles etc...on all sorts of units, etc...I think the tankos are on page 14 or 15 or 16 of the spotlight section and you can read about the german versions-the begleits that rode on stugs at kursk
btw here are some pzgrens I painted and they are 15mm
http://i107.photobucket.com/albums/m296/...zgrens.jpg