The NT version of god isn't any better, imo. As I have said boringly often no one has provided evidence for god which is verifiable.
All these various scriptures are simply "words about God", written by different people - and as Steve suggests, they differ considerably (I would contend that that they differ enormously). The Old Testament god is represented in far more contrasting ways than you continually state. I would distance myself from Steve in suggesting that the New Testament ideas of God are many and various too, and some don't point to a very nice god, as you say. Blanket condemnation of what are simply words on paper by different people is simply avoiding the responsibility of thinking. Cherry-picking is inevitable, unless you take the fundamentalist view - everything about God in the Bible is good.
Conversely, there is your form of resistance to cherry-picking, which is to say that everything said about God mediated by his prophets etc is bad. You seem strangely reluctant to relax this viewpoint. Since the Bible, both OT and NT, calls on humans to be merciful and forgiving, it doesn't reflect well on you if you think these ideas are all part of the portrait of "The Evil God of the Bible". It does not matter that God in some parts of the Bible is portrayed as a sadistic monster - other parts enjoin
us to show forgiveness, and indeed portray 'him' as being forgiving. Such qualities are good in themselves, no matter how they are presented by other material in the huge
library of the Bible. It is not a matter of believing in supernatural entities - that is not the point at all, as far as I'm concerned.