I'm just used to 4e's "add your Con score at 1st level" HP. When Rugult showed me the PF conversion, I was a tad surprised because I'd forgotten that one hit can drop a 1st level PC in PF. Even with crits, in 4e it takes at least 2 hits to drop a PC.
Then again, low-level combat lasts longer in 4e. It's a mixed blessing, because while you have more opportunities for tactics and teamwork, it's not really possible to just breeze through a combat in 15 minutes like I could with 3.5. Around middle levels the speeds seem to be the same in the two systems, but with very different character options.
It's been a long time since I played 3.5 too; and my experience with Pathfinder is rather limited as well. The main reason I'm choosing Pathfinder over fourth is because I just finished running a 4e campaign that lasted two and a half years; and I like to mix up the systems I run.
So far; my only access to the Pathfinder rules is through the online SRD; I'll be borrowing the rules from a friend at my Shadowrun game this weekend.
I'll probably be generous; and use 20 points for attributes.
Character Creation Outline - Pathfinder_OGC
I'll probably be generous; and use 20 points for attributes.
I'd likely go for 25 points if you're making the campaign out to be the 'epic fantasy' style. 20 points is fairly standard for most campaigns and should work, but the PCs might opt to try and take more breaks and rests due to their power level.
Tangent... just the other night we were commenting, as we wrapped up a Pathfinder session, that we love how quickly we blow through un-important combat encounters in PF (as in, clearing out the tower's first floor) to leave time for story, adventure, traps, RP, and the big bad combats.
I just feel it's more flexible. I got so tired of hour-long combat to take out a band of tiny kobolds in 4e.