I do not recall any complaints or problems with LMS on the 2010 to 2012 models.
There were complaints about hard shifting in the 2013 and up models with one of their later tunes.
One downside of LMS is their software system is proprietary, and is not compatible with any other system, so with it, you can't try a Gearhead or AJTurbo or Unleashed, or anything else to try them out.
They used to be the "no datalog" company that was plug and play, you simply installed the tune and that was it. No need to email results back and forth while your tune was being perfected. So it was seen as simpler for a beginner.
That may not be completely true now. Other companies have the plug and play format as well now, and for all I know, LMS may datalog to perfect some of their tunes now.
You are close enough, that you could have their facility install and test your tune, and that may appeal to you, if you see yourself as a one-tune, kind of guy.
Just do your research on this forum and decide how you want to do it.