The 5172 achieves a rare feat of intricacy and a good amount of lume at the same time. The 5320 also achieves it but most models with a lot of lume look..well.. blunt. I love wearing an aquanaut but it doesn’t have the same intricacy. Then you have quite a few models like the 5960 and 5961 with a ti
The thing I like about the RM28 is it’s a superb quality sports watch WITHOUT the tonneau shape so it is not instantly recognizable as an RM (avoid the unwanted attention). Plus you get a rotating bezel which is impossible on a tonneau.