Hmmm..figured somebody would have jumped on this by now...Anyway, it is a good topic, and I think everybody that employs a pick prefers different sizes and styles depending upon the aggregate..A great big one is handy to use to pry big rocks out of the way, and a nice little one for scraping gravel, and working tight spots..one size does not fit all situations or locations thats for sure,...so it would depend on where you are at and how furiously you intend to deploy it?
All that said, I like a wood handle, seems to absorb some shock and keep it out of your body better than a metal or fibre handle does..I like a flat blade (like a narrow hoe) on one end and a pick or axe style blade on the other, I also like a longer handle on the big swinging pick, with just a bit of flex, the longer handle keeps stuff from flying up in my face and busting my lip, plus, I can get a more powerful swing...the flex really puts some power to the ground...you pretty much have to make your own handle since most big off the shelf picks have a shorter handle that throws crap right up into your face! (which WILL bust your lip or take out your eye)
I have three, a standard big pick with both ends pointy, another big pick with the afore mentioned flat blade design, (my favorite) and a little version of that one. Couple of great big spud bars of various end configurations and weights...can pound right through just about anything, and pry just about anything..
Not a whole lot of experience with them in the gold fields, but I was a grave digger for several years, and had to bust through 3' of frozen clay soil in MN to dig a hole frequently.
Yes, a good comfortable pick and all your digging tools should be balanced to fit your personal frame...if they are not, you will know it pretty fast, it sure makes a fellow appreciate hydraulics if a guy has to move some dirt by hand. The only way to know for sure is to try them out, or get some advice from here from the guys that have used them...Good luck!.
Mud