You are aware the 2010 27-5L is a different floorplan then the 2014, right?
The 2010 27-5L has the bedroom slide on the passenger side (vrs driver side) and the bathroom layout is a little different.
The 27-5L actually has had three different floor-plans. The older had no bedroom slide, then from 2000(ish) to 2012 they had a slide on the "wrong" side, then from then on they were on the "right" side.
If the 2012's were on the "right" side we would have bought a 27-5L instead of the 29-5E (which is a very similar floorplan to the "new" 27-5L)
2008 F350SD V10 with an 2012 Arctic Fox 29-5E
When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.