Greg Stafford is the author of Jehovah's Witnesses Defended An Answer to Scholars and Critics.
Robert Bowman Jr. is an Evangelical theologian currently affliated with the Institute for Religious Research
They have publicly debated the Trinity doctrine on multiple occasions. Both men are very, very good with their respective positions. The transcripts are probably available online somewhere.
On uppercase vs. lowercase "G"
It's not actually a problem of two different opinions, it's a problem of two different sets of rules.
In theology, you capitalize the 'G' when it refers to the Supreme Being. You can clearly see this rule at work in the NWT:
"...and the word was with God and the word was a god"
In grammar, you capitalize the 'G' for other reasons as well, like when the word "god" starts a sentence or when it is used as a formal title:
"See I have made you God to Pharoah..."
Taken together, the two rules can work at cross-purposes on this particular subject. I'm not the world's best communicator, but what I was actually proposing was that people not limp between the two rules.