Best alternatives to the HTC One (M7)?

Hi everyone, I want to get rid of my HTC One due to its constant overheating (using stock 7.09.401.30 firmware and rom), the dreadful battery drain and the incredibly sh*tty camera (I have the purple camera problem). I'm not using any mods or custom kernels btw and I only occasionally play a light game and listen to about 30 mins of music. I can't really think of a good replacement. I would be looking for something with a DECENT camera, nothing insanely good or terrible. I would also be looking for something with a 2500+ mAh battery and one with processing power similar to the HTC One for around €300 (£220 or 0).

Any help would be greatly appreciated :)