On a barbarian, con gets maxed after strength, but before dex. Other martial characters I go for 12-14, any other class I keep it around 10. If it's rolled stats, I usually go attack stat, dex, con-wis (it's a toss up between the two if wis isn't the attack stat), cha (if it's not the attack stat), then Int (I don't play wizards, this is different, sometimes, for EK/AT, if I'm not going to use spells to attack, I totally still dump int and just take self-target/buff spells, and magic missile). I'm not usually worried about hit points except for levels 1-3, after that, it's meh for me. I'll pick up tough at some point usually if I feel like I'm too squishy, and enjoy the stats being in other places. Do my damnedest to avoid poison like the plague, and I do everything I can as a non-melee caster to not be in melee. If I'm a melee caster, i don't cast concentration spells so I don't care. I replace con with tactics (such as not grouping up to better avoid dragon's breath and fireball, cover, line of sight, etc.) in most cases. If I'm going melee ranged character, then I focus more on AC and important saves than worrying about HP, but I also am not too particularly worried about character death. I like making characters (not that they're suicidal, but they're totally suicidal) so when a character dies and it isn't going to be anytime soon that I get rezzed, I build a new guy and tell the party to loot me in honor of my character's noble sacrifice, and enjoy the extra XP. I've got a few characters that I like a good deal, don't get me wrong, and I've had a few characters I liked die on me, but that's what happens every now and again in a game where you fight hydras and liches and purple worms and whatnot...