Harmonious solos the SNARF out of everything, mostly cause the majority of their attacks debuff.

Drunken do the best dps when tanking due to their slap hand buff (perm 300 pt damage shield) but dont solo as efficently as harmonious.

Dragon - sadly the worst solo and the most dificult.  At 50 i can kill 4 dots but only lvl 38 and lower and only if i have secret of celerity up.  My personal prefrence for soloing 3 dots was definatly martial sword and stone dragon stance.  Simply because stone dragons only penalty is slow, which is meaningless.  That and when you have a martial sword on, you can pretty much keep quivering palm up (6 sec debuff for -50% dmg)

Prety same as Khana above. Im Dragon Monk lvl44. Only thing is, i dont switch to two hander cause DoT dont raises from it - didnt realize any change - even with flawless crafted weapons, maybe im wrong? Also RitW is great to start at begin from fight, so you in advantage.

Allways start with Gouging/Sundering finisher, its much higher damage as Thousand Fist finisher combo if DoT lands nice (mostly 2,5K/tick and 4 ticks there are)

Dragon monk solo is two-way-life:

1. Dish out fast as you can, more then a mob - so he dies faster than you. Berserk like - use all you got.
2. Cover yourself behind martial sword, stone stance, swaying step and feel like a whimp when you see your damage but kill save ;-)

My deal is to have allways about 80 or more eggs in backpack and use after every (hard) fight my macro:

/useitem "Hard xxxxx Egg"
/cast "Meditation"
/combatformset "Dragon Stance"

I tryed Harmonius out at lvl 43, played whole day, half solo half in Graystone with my group. Hands down, Harmonius solos like hell, after 43lvl dragon you feel like a mega-tank ;-) Only bad thing about Harmonius is, that Dragon is 500% more fun in group imho. You dish out hell damage with bard and shamy/cleric buffs, a lot more than Harmo, cause of storm stance and tons more endurance. Huge Crit rate from Harmo is not that better in group, cause with handwraps im moving about 30% crit groupbuffed. I tested it with Flawless handwraps of striking , also with flawless martial staff/graystone staff. The Crits are much higher and you can spam styles without even sec break.

Its for me no option, i beter suck solo and rock (imho!!) in group :-)

That's entirely possible, but I never get high numbers on DoTs with a Martial Sword, and always do with a Bladestaff. Maybe the numbers I've seen have biased my opinion.