I have had communication with Razor on the whole DA150 / 3W157 / ZDZ Super 160 comparison. All are good engines. I don't want to speak for him but I know he felt the Super 160 and 3W 157 were a tossup at the top with regards to top end performance. Check this post:

http://www.rcuniverse.com/forum/m_48...tm.htm#4837535

The power of todays engines in this class is just awesome to see.

Dave