Easiest solo class?

The only character I have bothered trying to beat the game with is a summoner Witch. I basically took all but 1 small grouping of minion life/damage/minion total passives, a few energy shield and life passives, and by end game I was going for the extra totem on the templar side (which I got by early merciless I think). The big passive was Minion Instability so the minions acted as bombs.

I had 2 totems - my first which I used most of the game was connected to Summon Skeletons and Minion Damage (by the end I got it connected to Item Rarity too). After placing the totem down, I would have about 17 skeletons summoned in seconds (in addition to the 7(9?) zombies) I cast manually. I think I only died about 3 times before getting to Merciless Act 2. Because the minions explode when dying, and the totem continues to cast until the max is reached, it was pretty safe...

The second totem was Ice Spear connected to Increase Critical Damage, Lesser Multiple Projectiles and Increased Casting Speed. I don't think I had any cold damage passives, but I did go for extra chill/freeze time to help with crowd control. Even without the damage, the criticals were pretty deadly.

It was fairly boring I suppose. In dangerous areas I would just cast totems up ahead before I could see monsters and the minions did all the work. When I got bored I would cast the Vulnerability curse :p

Not a very party-friendly build though. Your allies can't really distinguish friendly/enemy monsters and the crazy amount of minions often seems to cause some kind of game instability with textures/crash to desktop (or seems to make it more likely).

I made dodge-critical-dagger-using-shadow, and i completly lack AoE dmg (i use fire trap for large mob groups, and always try to focus one of the group with double strike).

With one target, i dont have any problems. With 0 energy shield and 0 armor, but like 21% dodge chance + 49% evade chance (i really dont know why they are not one property), and some block chance, dmg looks like:
mob deals: nothing, nothing, some dmg, nothing, nothing, 50% of my hp

With some rare monsters that 50% dmg spike can be deadly.

Anyway, i have level 39 now, so this is just beggining. Problems will show later i think :)

Why i must always choose hardest class to play?

Ranger w/ attack speed,evasion,critical strike chance