I always Glass Cannon the Tank, thats the best party member to do it to, they have so many HEalth anyway.
Actually cure wounds is better than a healing potion at higher levels but is not as good as the other high level heals. It regenerates so can be used over and over potions cant, has a (really) short range so it can be used on others but isnt great for that and costs nothing in gold. On the downside it does cost more AP, has a long cooldown, has a short range, and isnt as good as the other heals at higher levels.
I will probably do 2 lonewolves at some point as well.
I like some potions, the resist all +70% is good, the invisibility potions are just a necessity at one point particularly, healing potions are better than spells simply for the 3 AP heal, mostly I just sell the rest. Duration on the buffs is too short. Mostly thats the consensus regarding the duration on the buff type potions.