Still love my R0's but these brakes are in a classic of its own. So much feel, control and power. And the way the Tech 3 levers are positioned. Perfect.
I did think about getting the E4's but was told that they have alot less feel and power. I believe they are about the same as Formula "the one's". Which I do have on my Nomad and Flash.
You're coming from Xt's so I'm pretty sure if you upgrade to E4's you will notice the (big) difference. But why not just buy the V4's? :-)
Ano Purple looks the business. Just slightly Matt and lighter then the CK ano purple. BTW say hi to Glentress for me. :-)

 Thanks dude, ordered the purple e4's, Im about 70kg fully geared so was just fine with the XT's but felt a bit more power would be a nice upgrade but not essential you know? Will do! Forgot you were just a Scot living in Hong Kong haha

 Man these brakes are awesome! So much modulation and the E4's have more than enough power for me, such a nice lever feel, just really solid and precise feeling with absolutely no play, and purple looks awesome!

 Aye! Glad you're liking them. Agree, sold on the power/modulation, lever feel and bad ass retro purple :-)

 Hehe, V10 is now finished.......I think :-)

 Where are the purple levers?

 Maybe later I fix them on. Thinking I have enough Purple parts for now. :-)

 would look great dude but I can image it's already a big change from what is used to be

same feeling when you first get a >50" tv and install it lol

 Soon mate :-)