Arv

Most helpful? I dunno. Most favorite? NRX 852s and Stella 2500HGS (when it gets here)

I like braid to a leader. The leader changes depending on the conditions.

Mostly 3/8 and 1/2 oz would be better on a 5 power imo. A 4 power could handle that for sure, but if that is going to be the majority I'd step it up to a 5 power.

Trick worm.

I've had best outcomes using them t-rigged, but as already mentioned, there are lots of ways to use them.

I use a 853c for t-rigged stick worms. I have a 852s on the way which I also plan on using for wacky rigged stick worms, among other things.

What Hootie said

Yes would be my answer, but I've never handled either.

I fish both often and don't really know what makes me decide to be honest. I see if one or the other works. I don't throw any large plastics on a shakey head, but I will throw things like 6-7'' worms, tubes, flukes, and craws on both. Again, if one is working, great, if not, then I'll try the other.

Shimano Metanium XG

I'd go for the PQ or maybe the Curado if you are looking for another reel. Like DVT said, the PQ is probably the best bang for your buck. I've had a couple in past years, and while I've upgraded to much more expensive reels, I would not be upset with using a PQ by any means.

I prefer the size of the 50 (or 1000) sizes from Shimano. I haven't had the scorpion, but I have owned both the Curado, Chronarch, Core 51's and still own the Aldebaran BFS. Unless you're looking at using the reel for something that requires a large line capacity I would go for the Scorpion. The Chronarch Ci4+ is a fine reel. I did like it, but I just preferred the other reels. Some people don't like the smaller size but I think most people like the size of the 50's. There are more options in the Ci4+ as far as gear ratios and I feel like both reels will handle the same applications similarly for the most part (again, with the exception of techniques that require a large line capacity). Overall, I don't think you can go wrong either way.

Throw both, see what the fish want.

Haha, yeah. I'm not comparing apples to apples unfortunately. I think Goose did a review on here with the new Metanium DC. I've never had a DC reel, but the 13 Metanium is my favorite reel that I've used thus far. I like it more than the Cores and Steezes I've used, among others that you have listed in your current line up. It's ultimately up to you if the refinement/technology of the DC is worth the extra coin.