Frank's Stalingrad thread has wonderful photos of First Legion vehicles and its soldiers in diorama surroundings, including pictures of the "new" T-34. The same is true for his Afrika Korps thread. I think you will find most of your questions answered there.
What for me sets First Legion apart from most other manufacturers is the detail of the vehicles which in my opinion borders on the quality of kit vehicles like Dragon, Tamiya and others, customized with PE. I may therefore take the liberty of re-posting details of the Sturmgeschuetz.
But please be forewarned that First Legion's selecion of WWII AFV's is rather small compared to other manufacturers and that new releases of AFV's (again compared to competition, possibly other than JJD) are far between. The good thing is that the quality in my opinion is consistently high, there are no changes in the scale and that the vehicles are well researched.
So far, Matt has not produced any vehicles in camouflage (which is clearly against the trend), no late war vehicles like Tiger, Panther or King Tiger (which is definitely against the trend) and does not weather his vehicles heavily.
In the interest of disclosure: I have Figarti and First Legion vehicles, I think they work together well. Enjoy.