Hi Folks!

I am in the process of converting an old 90's suspensionless geared MTB into a singlespeed, cyclocross-type, semi-roadie cruiser thingy. Right now I am trying to convert my old threaded fork and head tube to accept a modern ahead type stem and drop bars.

I have decided on an 1-1/8" threadless stem adapter to use the new stuff and have noticed online that most of these only cost around $15-$25 except the Nitto MT which costs about $50 The only difference i can see is that the Nitto has a textured top section.
So I am asking if anyone has any experience with these things and can tell me whether having that textured section is worth the double to triple the cost over a Kalloy or Nashbar adapter which is completely smooth.
Thanks,
-G