Our Team Needs Help on the Drive!

[ExarKun666]

Okay our team officially decided on the following:
______--------------______
|--------\------------/-------|
|---0-----\_______/----0---|
|-----------------------------| ******28*******
|-----------------------------|
|--00--------------------00--|
|-----------------------------|
_______________________

********38*********


So the (0) is a wheel pointing forward only, and it is a tank drive. The width is on the side, and the longer side, in the back. All wheels are powered by one chain on either side, one motor on either side.


This was what I tried to get our team to do:

______--------------______
|--------\------------/-------|
|---=-----\_______/----=--|
|-----------------------------| ******28*******
|-----------------------------|
|--0----------------------0---|
|-----------------------------|
_______________________

********38*********

The (=) is a crab drive wheel and the back two wheels are just pointed vertically, all wheels powered. Each wheel would have it's own motor and chain moving it.

So if the first drawing is A, and the second one is B, then here are some questions:
1) Which drive looks better for this competition?
2) What are the pros and cons of A?
3) What are the pros and cons of B?
4) Suggestions that we should take under advisement, and any other comments.

TY to all who respond!