So far, the most ideal set up that we have figured out is the Rubi Crawler with the Atlas 2.0. Very few will do it but it does exactly what we need without ratio overlap that negates a large chunk of the money spent on the set up.
With a 231 case and the crawler, you wind up with 1-1, 2.72-1 2.72-1, and 7.4-1. None of those are very good in most instances.
With a 241, you get 1-1, 2.72-1, 4-1, and the really silly 10.88-1. So, a bit of change for less than great, but good.
The Crawler with a 2.0 Atlas gets you 1-1, 2.0-1, 2.72-1, and a very good 5.44-1.
Unfortunately that is based around the 42RLE for most of it since you can't get it behind the manuals without going to the 4 speed Atlas which adds length most can't deal with. The reason I keep mentioning it as the Crawler / is because you can add the Atlas 2.0 to the Rubicrawler if you already have it installed.