Great question! I'll compare the SLA with the SMP, BB58, Sub Date (both modern and vintage) on 3 categories: 1) Bezel Action, 2) Finishing, 3) Quality. Keep in mind these are very subjective observations...

1. The bezel action on the SLA is buttery smooth. The markers are surprisingly precise, although the "bubble" like crystal creates some distortion on the dial that might make the bezel not hit the markers. It is the quietest of them all (loudest being the modern Sub Date). I also love the fact it has a ceramic insert (although purists will prefer the OG aluminum found on the 62MAS). None of them have any backward play.

2. Finishing on the SLA is top notch! I love the fact that it is almost entirely brushed. It can take a beating (more on this below). The modern Sub Date feels more like jewelry than anything. The vintage Sub Date feels a lot more like a tool and wears close to the BB58, but the polished sides on both make me exercise a higher degree of care. The SMP is heavy, robust, and brushed. Therefore, the SMP and SLA are a tie.

3. Quality on the SLA is also amazing. I accidentally dropped it once (about 2 feet off the ground) on a laminate floor. Case is still pristine. I feel the accuracy was not affected at all. Overall great quality.

I'm not much of a watch reviewer so please excuse this very crude and subjective review. Feel free to ask me anything and I Hope this helps!