Despite your past lack of satisfaction with YYF, the Protostar is not at the same level as those other YYF’s you mentioned. However, the Protostars will have some vibe, it’s a plastic with spacers, it really can’t be avoided. The vibe will most likely be very small and will not affect play. I still recommend the Protostar.
Between the Trigger and the N12, it’s up to you. We’re talking metal vs. plastic. I have both, I enjoy both.
Excellent grindable surface treatment, great for 1A and 5A, moves at any speed you want it. It scores low on the durability factor because the thin rims are prone to cracking if dropped on edge, especially in 5A, which is a major killer of this model. It is also excessively loud. The Trigger is on the heavier side of things being at 68 grams. It’s not really heavy when you take into consideration the size of the yoyo.
The N12 is surprisingly smooth for such a low cost item. Solid performer, really well made, feels good in play too. This is probably the best MYY to date and I feel they may have a hard time topping this. I do like the T5 more, but that’s because I like that kind of shape more. The N12 isn’t that much lighter, coming in at 67.58 grams.
Out of the package, the Trigger is playable. The N12 is usually playable out of the package. There’s been issues with Magic YoYo regarding their response pads being bad or falling out, and issues with their bearings. Response pad issues are usually easily fixed with off the shelf response pads. I believe(but I could be wrong) that YYJ Silicone pads and YYF’s CBC 19mm slim pads will also work, as well as flowable silicone. Bearing issues tend to be more of a nuisance than a real issue. Cleaning the bearing out seems to be the fix most of the time. A few bad bearings have been reported. Changing bearings is usually no big deal.