Hello Cydoc The best spots to solo is Labby off peak time, Agramon Bridges, around docks( usually works better if ports are cut and they have to bottle neck to one of the lower keep docks) im sure there are other places to solo just cant think of any at the time.
Best classes for soloing in alb atleast, I think ALL Melee Classes can do Fairly well solo. But lets go into classes that excel at soloing. Also ALL stealthers are good soloers so im not going to include them also
Albs best soloers: 1. Necromancer ( if your good enough you can kill up to 6 players at a time somtimes more) 2. Reaver ( reavers are also VERY good Visible soloers), 3. Higher RR Ministrel. 4. Sorcerer - MoC makes it easy ( this may be hard at first but they have all the nice abilites to be one of the best solo casters in game.) 5. Cabilist - MoC makes it easy. same reason as Sorc. 6. Theurgist - MoC will help ( Therug are VERY good soloers but the only downfall is that they have no lifetap so if you get perfed its most likely bye bye.) Higher RR Heritics - MoC is a plus ( These little bastards are the only thing in game that can get AoM and PD. They are stock piled with MANY toys.
Edit: Sorry Forgot you said Mid and hib. Oh well maybe sombody else will find this interesting