Rode then both at the Outerbike festival in Moab in September. The Rallon climbed really well (not the reason for buying one I know) and seemed amazing value for the price. Unfortunately the compression on the fork (non stock) broke before I got a real chance to test it on a rocky descent. I’d happily buy one though.
The Jekyll I demo’d was the top of the range model, so probably nearly 3x the price of the Rallon. It was extremely plush descending, and also climbed well enough. I didnt like the reduced travel setting, felt too harsh (but maybe that was just the demo set up). I think I would leave it in 160mm travel.
If I was offered both I’d take the Jekyll, if I had to buy one I’d go for the Orbea. I’d also be happier maintaining the fork and shock on the Orbea, if that was a consideration.