difference between Princeton Review and GMATPrep s/w

MBA
1

All, can someone share his/her thots as How and What is the difference w.r.t. scaled score between Princeton Review and GMATPrep S/Ws ? TiA.

2

All,

can someone share his/her thots as How and What is the difference w.r.t. scaled score between Princeton Review and GMATPrep S/Ws ?

TiA.