You can put the LG G2 on your list, has a bigger screen than the N5 (also a much more lasting battery and better camera) and evenn is only 0.3 inch bigger it is noticeable and better, drop the N5 personally and keeped the G2. price - less than 400 (new).

..Or the Z30 but I guess is about 100 more expensive...

..Or the N4 (have it too) which someone mentione before which has a built that I prefer to G2 or N5, and you can have it for less than 200 euros..