The new version of @Josef_Prusa 's hot end looks a lot like @Sanjay_Mortimer 's.
http://www.flickr.com/photos/prusajr/9452668947/sizes/h/in/photostream/
Yeah, it def does…
Kinda cant innovate lathe made heatsink 
On the other hand, there is still same polished single-piece SS core running all the way thru Just fins are bigger if you compare to previous version
@Josef_Prusa bigger and more thermally conductive fins.
I also noticed that neither of you is anodizing your heatsinks. Have you looked into it? I seem to remember seeing somewhere that the aluminum oxide layer makes a better radiating surface than unfinished aluminum, though putting a fan directly on it should decrease the difference…
Gooood point, but it is PITA to do, as it has to go thru few more production steps and one more factory
Red would be pretty tho
@Sanjay_Mortimer has been a good, active part of the community surrounding his product. I’m glad to say that I’ll probably be purchasing his hot end in the future, as I’ve heard nothing but good from people who have it.
Agreed about the design. Not to say that there aren’t a ton of ways to do the all metal hotends, but the heatsink designs seem to be working the best, so it would stand to reason that most people are using them now. The MetalMagma is essentially the same as well, a heat block, screw-on nozzle, and heat break before a heatsink with a fan.
If the iteration gives us better quality hotends to choose from, then I’m all for it!
My Experience with @Sanjay_Mortimer has been positive. I have two E3D Hotends. Excellent customer service
I have to chime in on the praise of the e3d hotend and @Sanjay_Mortimer 's outstanding customer service. Well deserved all the good rep.
I have one the 1st run nozzles from E3D and Prusa, using PLA the E3D nozzle works better, but with ABS the Prusa nozzle is working great.