Yep. I can speak for soloing a warden. I did it from lvl 40 to 80. If you get a mix of healer leather and brawler leather, max out your combat arts and get the AA double attack percentage at the end of one of the EOF aa trees there is not much you can't do. Are our roots pretty damn stable...ayup....can we do most anything? ayup...it might take a few minutes but with the right gear you can do it.
Necro is also fast xp...basically any chanter, summoner class is easy and soloable. Brig is very good as well.
So choices in order so far:
1. Necormancer/Conjuror
2. Illusionist/Coercer
3. Brigand
4. brawler - monk or bruiser
Try them out and see which you like best.
And last but not least...play the class you enjoy and have fun =)
Almost forgot...the ROK gear itemization is excellent for mages and druids. I've gotten so much good stuff on my warden in ROK that I have a two bags...nearly three full of back up gear
I originally started on a necromancer and leveled her to 70/100 so can also speak for that class and say it's easy shmeesy...just don't try the AFK, let pet kill crap you will find yourself suspended or banned faster than you say " I play EQ2".
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"Behold, I am sending you like sheep in the midst of wolves; so be shrewd as serpents and simple as doves"

Enter through the narrow gate, for the gate is wide and the road broad that leads to destruction, and those who enter through it are many. How narrow the gate and constricted the road that leads to life. And those who find it are few.