I just bought a PS4 for this and DSII. Then learned about Demon's Souls and bought a PS3 for that.
Started this last night and had my ass handed to me. I love it. I havent gamed in quite a while, the sound on this gave me goosebumps. Haven't experienced that feeling on this level since the shareware floppies of Doom 1.
Since you went all out and got a PS3 for DeS, which is my 2nd favorite in the series, I might suggest taking a look at Dragon's Dogma. It has fantastic combat and atmosphere and is fairly similar to the Souls series.
I believe they may be working on a remaster or an online only MMO style version, but it is a fantastic game, and like I said very 'souls like', if a bit more arcadey.
The new load times are much better but still need some love. Trying to finish all the chalices and doing COOP and invading can get frustrating with 30 seconds worth of load times.