If you play solo, balancing crit chance and power is key. If you exchange too many gear pieces for Assassin's you will hit critically more often, but with lower base damage, so the total result will be worse than if you had kept one more piece as Berserker's. Personally, i play a ranger with the spotter perk, full marauders gear and 1 or 2 assassins trinkets. this, combined with (usually) fractal potions or if not in fractals, some precision foods/utilities, this means 100% crit is very easy to achieve, and assassins gear would be wasted (since you cant go over 100% crit chance). Marauders also has more stats than core zerker or assassin, the added survivability is great for playing solo, it means you can make mistakes or miss dodges and not be punished. With my full marauders set, i find that i can face tank all veterans and quite a few champion hero points without worrying about dodging, this would not be possible if i didn't have the added vitality. I often dive into the middle of camps in wvw with my soulbeast and don't have to worry about using my heal. with my full zerk characters, i find myself having to use line of sight to get the ranged characters to get grouped into melee range. For group content, scholar runes are the obvious choice for max dps, but as a solo everything player, i would recommend rune of the pack. the added power and precision is great to guarantee perma crit and big damage, and the 6 piece bonus gives you might and fury while in combat, as well as some added boon duration. so as long as you are fighting something, you will pretty much always be critting. also, you're going to get hit, a lot, so rune of the scholar bonus will hardly ever apply when you dont have a dedicated healer. Summary: I think full assassins gear is a waste, as you will most likely be above 100% critical chance, and anything above 100% is wasted. Berserker's gear will often yield higher DPS, and higher power is always welcome. Marauder will give you the best/most forgiving solo experience. almost all classes have a sigil for precision, perks for higher precision, and access to foods/ulilities/runes to boost crit chance, without having to run sigil of accuracy. running zerk/assassin instead of marauder is trading survivability for a bit more DPS. crit is great, but doesnt matter if youre dead. hope this was somewhat helpful, though you seem to have made up your mind.