Flipline adjuster
Currently I'm using a Distel hitch with micro pulley on a D shaped ball lock caribiner for flipline adjustment. I was using the VT, but with the braids it adjusted out a little to far for my liking, especially if you have to get in close quarters. I like this set-up works very good for me.
I used to use the the Gibbs with a MR screw link for the attachment to saddle. I also liked this set-up for 2 reasons. The Gibbs fit my my hand better than the Micro and worked a little better to me. The scew link stayed put on the D ring of the saddle, wouldn't flop around like a carabiner would. The one thing I just can't stand is a carabiner flopping around on a saddle and side loading and not staying in place where you want it.
As far a primary life support carebiners I've always been partial to the modified D auto lock key style from Petzel. The ball locks never did much for me, when it came time for attaching and detaching,the ball is just to small and hard to use, especially with gloves on. I've always prefered the key type over the pin because the pin type always snag and hang up on what ever it came in contact with. Little things like this can become a source of irritation, especially on a long climb in a big tree on a hot and humid day, when things aren't going the way you would like them to.
Well you've my heard my story for what it is worth, you just have to experiment and play with some gear till you find the right fit to your style and unfortunedly have to spend some money. I've spent money on some things that I wished I hadn't of, but that's the biz. Good Luck