I've used a lot of them, although I was pissed off when an ancient dragon ate a char I had 50 hours on and thought was going to make it through.
One thing I'd like to see is a fix to stamina so you can't use shield bash or a power attack unless you have the amount of stamina that it would normally drain. The current design makes a 1 stam absorb weapon enchant or even vegetable soup a bit unbalanced.
And no companions isn't that bad depending on playstyle. Many of my deaths have been due to stupid required quest companions not staying out of the way and charging in to battle. I should just run away and say to hell with them, but I'm always worried it'll make me fail a quest.