The 335 doesn't come with a fan in the front despite it looking blue in colour on the image. The included fan at the rear is just a plain black one afaik, which I think runs about 1300 rpm or so. So up to you what you stick up front. If you want something quiet then you may have to go without colour as LED fans do have a tendency to be more noisy than their standard non LED counterparts. Maybe something by Enermax if you must have colour.
Both decent fans, neither will move as uch air as the vipers though (hence being more expensive)
The Scythe fans are excellent though, and Xigamatik have good reviews