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Chosen/KotBS: It seems like chosen is the better damage dealer and more offensive in general, as they seem to have the option to be viable with a 2H as well as SnB. People are saying KotBS is better because they are more defensive and are better for group combat, also i am not sure if KotBS has a viable 2H build. Overall it seems chosen is better for solo and KoTBS is better for group. Need feedback on this though.
Blackguard/Ironbreaker: Both tanks seem to be bit offensive, with blackguards providing a **** ton of debuffs and with ironbreakers providing raw damage. Ironbreakers seem to deal more damage and be much better in groups with the heavy emphasis on the oath friend mechanic. Overall Ironbreakers seem to be the better tank but lose out on their oath friend mechanic while solo, so it seems like blackguard is better for solo.
Black orc/Swordmaster: I am really unsure about these 2 tanks. People are saying both classes under perform compared to other tanks, especially swordmaster. I'm not sure which is the better tank for solo or group but they sound like a lot of fun. Need feedback.
Slayer/Choppa: Again unsure about these 2 either. I hear that slayer is way better than choppa but don't know why. Both require a healer and tank to babysit them so they can do massive damage, but it seems like they have a mastery that allows them to dps without becoming glass cannons. unsure which is better for solo or if either are any good for solo. Slayer seems to be better in groups? Need feedback.
Marauder/Shadow warrior: I have a marauder and I'm pretty happy with it, strong and tanky, unsure about shadow warriors, they seem really flexible and are pretty different. Not really much of a mirror

DoK/Warrior Priest: technically healers, though apparently these healers can do decent dps if specced right. It seems DoK has better damage while warrior priests have better healing. Need more info.
Witch Hunter/Witch Elf. Unsure which is the best for solo. Witch hunters seem like they have the advantage since they also have ranged attacks, does witch elf get some better stuff to compensate? I picked witch hunter since im not really keen on playing a female only class and having some range capabilities is a nice bonus.
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Obviously im pretty noob my knowledge of these classes are limited, and I'd like if some could help me build a better understanding. Again im am not asking for the better class, I am asking for the one with better solo capabilities as I like to play solo most of the time.