M4 Sherman Research Path

Seeing how the wiki never seems to do a good job of handing out information, I decided that I should start giving out some advice on what modules to research first. Keep in mind that if you have elited your previous tank, it makes life a lot easier. Also all of my research path guides will elite the vehicle in the process. If you believe that there is a specific module you do no wish to obtain, you may skip it at your own risk. So without further ado, let's get started.

If you wish to use the 76 mm M1A1 gun, follow this research path.

1. Engine: Wright C. R-975C1
2. Tracks: T42
3. Turret: D51072
4. Gun: 76 mm Gun M1A1
5. Engine: Wright C. R-975C4
6. Radio: SCR 506
7. Gun: 105 mm SPH M4L23
8. Tank: M4A3E8 or M4A3E2 

If you wish to use the 105 mm SPH (also known as the 105 derp or mini-derp), follow this path.

1. Engine: Wright C. R-975C1
2. Tracks: T42
3. Gun: 105 mm SPH M4L23
4. Engine: Wright C. R-975C4
5. Turret: D51072
6. Radio: SCR 506
7. Gun: 76 mm Gun M1A1
8. Tank: M4A3E8 or M4A3E2

The M4 Sherman has two different choices of weapons and both have its strengths and weaknesses. The 105 mm is good against low tier targets potentially one-shotting them. The 76 mm makes you more of a threat against tier 7's and lets you snipe slightly more accurately than the 105 mm. 

Whenever upgrading a tank, you should always aim for obtaining the best gun possible before research other modules. Unfortunately, the M4 Sherman is extremely sluggish and unmaneuverable with its stock engine so getting an upgrade made save you some frustration. If you don't mind the slow speed, then get the skip the first step and get the engine later.