Don’t forget to measure and enter the actual bit diameter, not the shank. I’ve used a dozen different bits, and they’re all typically slightly different. For example, your 1/8" bit may actually measure .122".
The advantage of the 611 over the old 24V 300W spindle is that it has a heckuva lot more power, meaning it can cut a lot deeper and faster. To compare numbers, check out this forum: 24V Spindle vs. 611 Router - Quantified. It’ll tell you about how I did identical projects with both spindles, but the 611 went 17.5 times faster. 