A small bend in the bow arm seems to be the best option, this looks almost straight. I have tried all combo's and the slight bend works best for me and most people in our club. I am still experimenting with this.

Opinion will vary on here as it's not cast in stone. I'm sure you may have "opend a gate" on this one..

I feel very strongly that the bow HAND has a huge influence on the shot too.
You really need to get a coach with good experience of compound archery to have a look at you. The draw length on a compound is very inportant to get right as it has a big influence on the line of the shot. If not check out some modern books on the subject. James Park advocates a Straight bow arm. Marcus seems to know the chap very well so it's very likely he will promote the streight bow arm too, as I suspect James was his coach at some point ( is this right Marcus?)

Interesting question...