Ok bit of a bump here, but I have been researching a similar question, and this didn't get any replies....
MD60 vs Seraph (and Seraph P7 vs XM-L?) is what I've been trying to figure out for my SF Turbohead upgrade.
Some pros/cons as far as I can tell:
MD60 Pros: Drop-in, longer runtimes, keeps the SF bezel (possibly better construction than any replacement bezel), XM-L led
MD60 Cons: Is the led ideally focused in the stock reflector? Single mode, heat dissipation concerns(?)
Seraph Pros: Replacement bezel (ideal focus), 3-mode available, higher lumen count from same XM-L led
Seraph Cons: Replacement bezel (<SF build quality?), shorter runtimes, lack of shock isolation?
Then there's the Seraph P7 which is on sale for $75 now! Is it worth spending the $15 more for the XM-L version?
I have no idea about mod-ability or battery compatibility for any of the above.
What do you guys think is the best option?