I love Disney World and have visited there well over ten times and I have been to Paris twice. I can tell you that while Disneyland is smaller, the upkeep is better, and the attractions are generally better maintained. A definitely different feel than Orlando. Different, much, much smaller and no lakes etc, but still worth seeing it you haven't before.
I love the vibe at DL and have since my first visit in 1990 and through my years (2001-08 as a parttime local). It's more relaxed than at WDW. More young people (meaning teens and 20-somethings). Everyone just seems happy and wanting to party and have fun.
At WDW, except during Spring Break and Christmas, it's largely a much more tightly-wound guest makeup and people are always tired and frazzled and, often, quite nasty.
I love parts of WDW, such as EPCOT, DAK, some of the resorts especially WL/FW and DAK Lodge ... but I relax more in Anaheim. And get a higher caliber of theme park product too!