The SEL and SEL+ monikers sound like complete SHIT in my opinion. What the hell does SEL mean anyway. What is the mental image that you see when you hear that name? For me it sounds like something a 75 year old coming out of a Buick Le Sabre would be looking for.
"Wow man that Edge is nice, which model is it again?" "Thanks man it's the SEL+ ... yeah yeah.... I know it sounds stupid as hell."
One of the most creative names I have heard for separating packaging was out of Infiniti.
You have the Journey and the Tech package. Journey is the entry pack which has most of the options you'll want. The Tech package offers upgrades like Nav and Blue Tooth etc.
Instead of creativity we are stuck with SEL+... Sounds Wal-Martish if you ask me.