I'm certainly no electronics guru, but I would concur with Werner regarding the desired current. Those drivers don't have any specs as to how much current they can deliver. They will be able to handle the voltatge, but if they only deliver 1A max, your not going to have an impressive output from the MT-G2.
Have you seen this post regarding MT-G2 driver test results? Some may be more than what you want to spend on a driver.