FLStudio 12, which richly deserves to be number one in the recent Tech RADAR rankings.
Fully understand 12.4.2 is just out, so bugs are going to occur.
For me I have Softube's Amp package, and FLStudio crashes ...
other plugins that are included with FlStudio 11 Producer Edition.
These are some of the plugins that I would want to know how to tempo-sync to my projects.
Fruity Reverb 1/2
Fruity Chorus
Fruity Phaser
Fruity Delay 1/2 ...