I read about the Tech Preview of Vivaldi Browser so I decide to get it and test it.
First impression,
New look is great. The combination of white, black, red and green is beautiful.
Go to Settings and I got the combination of white, black, blue – it looks like windows 8 and outlook 2010 
Testing the browser:
it’s pretty reactive – without lags
Checking windows processes, I open 1 session of Vivaldi Browser with 2 tabs and there are 5 vivaldi.exe in process
Can somebody tell me about these processes??
Testing some sites – very fast and impressive
Conclusion: I will try it for daily-use 