I'm getting my 2nd 50mm 1.8 but not the Mark II version. I'm bidding on a Mark I version and hoping to win it. I had a BAD experience with the Mark II lens.
First warning - don't ever ever drop it. Even if its just a low fall. It may look fine but it will give you problems.
My DD dropped mine from the couch while it was on the camera. I've heard of others who've dropped it too without it being attached to the camera.
The reason? It may not look broken but if you put it on your camera, you'll end up in a tough situation. My camera looked fine after I examined it and tested it. The next day, the autofocus failed. When I tried to remove it, it would not come off my camera. It was holding my camera hostage! After much researching online, I found this to be a common problem. Apparently, the AF will stop working iand if it doesn't, the plastic mount will fail. That is what caused it to become stuck to my camera. I had to take apart the lens (which didn't work) and then eventually break the lens off the camera. My camera, thankfully, was fine. I checked Canon and they wanted $200 to repair it. No way. I rather sacrifice the $100 lens instead.
Mine likely happened from the drop but the info i found online, there are others who never dropped it but the lens got stuck on their camera!
I can't afford the 1.4 lens at the moment so after much research, I decided to find myself the Mark I version of the 1.8 lens which has a metal mount. Apparently, the plastic construction of the 1.8 Mark II lens may be the problem.
This info is more FYI.
As for lens recommendation, I'm thinking to get the 85mm prime. I shoot indoors and sports alot as well as portraits. I'm also looking at the zoom lens previously mentioned. For now, I'm hoping to get the 1.8 Mark I lens and then save up to buy a zoom lens
Happy shopping!