Hi all,
I've been thinking of upgrading my 2007GL500 to 2013+ GL/GLS 500 or 63. Heard about lots of M278 issues which is a bit of scary...

Just wondering if later model (GLS 2016 ish) M278 will get some common issue resolved compare to 2013/2014 model? Or if the M157 on early (13/14) GL63 could be more reliable?

Thanks in advance.
Tom