Need a comparison z3+ vs Z5 ( Camera, Heat issue)

Hi guys I need to make a decision to sell the z3+ and get the z5, so basically need some camera/ heat comparisons
If you have any samples please post. thanks

Phone heat up without turning on + black screen when turn on

Hi,
I dropped my phone yesterday in the water. I was able to turn it on but the volume button was messed up, so I put it in some rice overnight. Today, in the morning I tried to turn it on and it was stuck in the booting LG logo. I turn on safety mode and then turn it off to get it working again. It was working fine until afternoon. The phone screen went black but it is still working (i was listening to radio and it was still on when the screen went black) I took out the battery and put it in to try to turn it on. LED flashes, it is working but still black screen (I was able to accidentally dial voicemail). The phone also heat up with just the battery inside the phone. It heat up even more when it is "turned on". Is this a hardware issue? Does anyone know how to fix it? I tried the volume down + power, take out battery and reinsert. Nothing works... I know this is a long post, I really appreciate anyone that took the time to read it. Thank you.