Are the latest 50g cheaply made?

[eried]

Hi, I have a general concern about the latest 50g (2-3 years). I have mine since about nov 2006 (from the US) an still works as the first day (I was so frustrated after three 49g+ with broken keys and faded paint). Now, from my website I am receiving increasing amounts of questions about lines in the screen, calculators that won't boot up anymore after months off, even some users say they feel the newer one lighter and cheaply made.

Is this true? Anyone have several ones to compare? (It can feel cheaper as a residual perception from the cheap new case)