Yes, the original SunDrop is a dream. That head with the Nichia 083 are a perfect match. I liked my XR-U but it could not match the regular SD for a clean, artifact free beam pattern. Throw doesn't really blow my skirt up but man, a perfectly smooth beam with no rings or holes or tint shift with get me every time. My buddy has a SD and when we get together I like to shine it about a bit just to marvel at it.
The Sapphire Mule is a similar marvel of design. The Nichia 036 (I think) has a very similar tint and color rendition to the Yuji 5600k..maybe ever so slightly warmer, so verry nice. But the beam pattern is pure flood - I would say nearly twice as wide as the Sapphire with the Yuji. It isn't very bright in this ultra floody configuration, but it is glorious light. I don't use it a ton out of fear of losing it but I have taken it camping a few times and it is great around a very dark campsite or in a tent.
Edit to add: It feels so good to have a chat about McGizmos with some of the old guard. The Customs forums have been really quiet lately and the recent mashup of the forums into one I fear will only further hinder such discussion and alienate long time builders like Don. I hope we can find some of the great old threads that were about more than just boring production lights and consumerism and bump them up to stimulate some fun discussion. I miss that!
