I picked up a Yaqi Flipside head last month and I've just started using it. I have to say for me it is a very mild, but efficient razor. I've used it with a Polsilver Stainless for a few shaves, and today I stuck a Lord Silver Star in it. I mainly use the open comb side, but I've done a little bit of buffing with the solid bar side. For the $6 I paid for it, and whatever I have in the generic handle it's been a nice razor. It won't run my Rockwell or SLOC out of the rotation, but it is certainly enjoyable to use.
( Photo from internet )
( Photo from internet )