Yokohama Blu Earth 1 is a new tyre from Yokohama, it has orange oil for better wet grip and I have seen the ratings for this tyre on the internet and in Silence and Comfort it has got 9/10 and in other fields also it is excelling and I am using ADVAN DB and C-DRIVE in two of my Honda Citys and I would say both are superb tyres in terms of comfort and grip and I am 100% satisfied with them but I would say if you get a new product like the Blu-Earth 1 then I would say go for it eyes closed...It will surely impress you...BTW tell me the price of Blu-Earth 1 and the shop name from where you are getting them?
I have never used any Continental tyre but I would say it might be more expensive than Yokohama but Yokohama is also a great tyre and everyone admits this fact!!!
I would like to add here that C-Drive also is a wonderful tyre...You can also get it for your Civic...It has got sport performance with luxury comfort...The drive of the car becomes very enjoyable once you install C-Drive in your car!!!