Lane 103 is Berkline Reno - 12003. It has slightly taller back - 44" vs. 42.5" on the Berkline 12000.
The Berkline 12003 has more neutral look. The 12000s have more contemporary look with rounded armrests.
The 12003 has straight armrests. The 12003s have storage and square plastic tray that you can mount on top of the armrest. The Berkline 12000s do not have those features.
The 12003 will be a cushier chair. The 12000s are very comfortable as well, but will feel just slightly firmer. Although the Lane version of the 12003s may not be as cushy as the Berkline 12003 used to be.
I hope this helps.