Hello Anton.
T-34s were built in Kharkov until the city was taken by the Germans in 1941. The design originated there, at Zavod No.183, and evolved from their experience with the BT family of tanks. Interestingly, Soviet tanks experts of the time wanted to replace it with a the T-34M, a completely different design based on the (Leningrad) T-50 as the T-34M, but the war intervened and the T-34 stayed, and triumphed. In 1944 when the factory was rebuilt, it was planned to restore production of T-34s, but instead the factory began production of the new T-44, from which the T-55, T-62, T-72 and so on were developed.
The DML T-34s are pretty good, easy to build and finish. The newer they are, the more goodies they come with in terms of brass parts, aluminum barrel and individual tracks. Modelling has changed. Nowadays these things are very popular, and crazy modellers will often spend far more than the kit cost to gather up all these things.
There are three kits from DML for T-34s from KhPZ (Kharkov Parobozostroitelnii Zavod). The first production tanks had a shorter L-11 gun, and is kit #6092. Kit #6205 has the common welded turret and F-34 gun, and #6418 has these parts as well as a cast turret option and additional brass parts and barrel. Go for the last one unless you want the early gun.
Every model has faults, and these are no exception. Mark and I will drive each other crazy arguing about how many bolts there were on the rear towing hooks of tanks built at Sormovo in April 1942, but on the whole these can be built straight from the box without too much grief. If there is ONE thing to do to improve the kit, it is to replace the screen over the rear compartment with mesh, but these parts are included in the 6418 kit. You don't really need to hunt around for anything else.
If you do want to get extra stuff for your tank, there is no shortage of choices. There are hundreds of items offered for T-34s, from decal sheets to complete resin kits, highly accurate and highly expensive... go nust! Start by checking out the T-34 page on the PMMS site. Terry Ashley has reviewed many of them, and this site is an excellent resource.
http://www.perthmilitarymodelling.com/reviews/subject/t34.htmI can suggest some books, too. This book is recent, and is hands down the best T-34 book available:
http://www.network54.com/Forum/409173/message/1259966822/New+book+for+sale-+The+first+full+encyclopedia+of+T-34Viktor Kulikov, who has posted this advertisement, is known to me (and many others) and can supply it. (I assume you still read Russian?) There are many other books available too, and if you send me an email I can point you to some Russian sites with much information.
Have fun with your model. Beware that one leads to another, and it can become a very addictive hobby. It can also be a lot of fun, and is an excellent way to relive history.
Cheers
Scott Fraser
Canada