So, I just watched 3 new videos from Sound On Sound about tape effects in Reaper..... Gotta say, I am jealous! Yes, I know, we have convoluted work-arounds to do this stuff but, man, it's so easy in these videos. Really wish Cakewalk would institute this in Platinum.
 https://www.youtube.com/watch?v=0p7DONoWf4A

I agree with you....way cool!

Good luck, I've been asking for varispeed for some time.
 
Reaper's implementation is among the best out there, really good stuff.

yea im a big fan of vari speed myself, from the old 2 Trk, 4 Trk days.

Yes, I'm with you, too!

+1 for varispeed
I often play acoustik guitars at half speed as background instrument. A very special sound - and very easy with a tape machine.
I would also like to play midi instruments at half speed.
 

For those who want to know the workarounds:
 
Les Paul's Double-Speed Tape Trick
Variable Speed Techniques
Fine-Tuning Pitch Transposition
How to Change the Tempo of an Entire Project
 
Although it would be nice to be able to varispeed an entire project, 95% of what I need varispeed for is for speeding up or slowing down the two-track mix, or doing pitch+timbre changes on individual instrument tracks, so the workarounds take care of those needs. 
 
 

rodreb
 
 https://www.youtube.com/watch?v=0p7DONoWf4A

Cool! So Varispeed makes any band sound like "The Partridge Family".
 
Lol sorry, just had to say it. I'd love Varispeed.

Like reaper, n-track has an on-the-fly varispeed slider with low artifacts.
 
Pitch can follow speed. Speed can follow pitch. Pitch can be locked.

I suppose we could import our Sonar project into Reaper, do our vari-speed stuff, then dump it back into Sonar. Just a PITA, though.