SO after I [edited] up really bad and deleted my T-43 review (I saved it on a sticky note) here it is again!
Target DPG:1550
TL;DR: The T-43 is a true medium. It has great mobility and dpm at the cost of pen.
FirePower
Pros
+Good DPM
+Decent accuracy
+decent alpha
Cons
-Pen is lackluster
The gun gets the job done and fires relatively quickly, however the pen is worst in tier and is inadequate tier 8 and 9s
Mobility
Pros
+Fast and accelerates quickly
+Turns well
Cons
-none
The mobility is best in tier allowing you to flank and pop up from unexpected angles.
Survivability
Pros
+Stronk Soviet gun mantlet
+Soviet cloaking device
Cons
-armor overall is bleh
The armor isn't that good at all the only thing you can rely on is your camo. Your gun mantlet can provide some pretty trolly bounces will be penned by most tier 8+ tanks.
Equipment
1st:Rammer-To pew pew pew
2nd:Egl-For 360MLG snap shots
3rd:Optics-For spotting stuffs
Overall
The T-43 is a strong tank for it's tier. It can be compared to a Cromwell as it has the same play style, Use your mobility to flank around and get early lights. Late game you can do some serious work by driving around and pouncing on the weak lone heavies and tds. You can also play this tank as you would a T-34-85 that was given more speed and hp as that is what it pretty much is. Another interesting thing to note is that you are put top tier quite often because of the mm changes in the last patch. Overall the tank is a solid tank and I recommend it if you can work around low pen.