Any other host currently using these or similar/better quality ?
per the update blurb:
ZTX Pro time-stretching
ZTX Pro has been deployed throughout Digital Performer 9.5 wherever audio time-stretching can be applied and produces dramatically improved results, even when slowing down or speeding up audio by extreme amounts. Users will experience state-of-the-art time-stretching quality on any type of audio material: drum loops, solo instruments, multi-timbral material, vocals, full mixes, mono, stereo, n-channel, etc. Users can easily conform imported loops and audio clips to their project tempo, apply wholesale tempo adjustments to entire mixes, create conductor track tempo maps (including gradual tempo changes) and many other operations that alter the length and speed of audio clips.
ZTX Pro pitch-shifting and relative pitch editing
ZTX Pro pitch-shifting provides extremely high-quality pitch-shifting on both monophonic and multi-timbral audio material, even full mixes. Formant-corrected or standard pitch-shifting can be applied as desired. Global preferences can be set, with the ability to specify the pitch-shifting mode for any individual audio clip. A new relative pitch editing layer in the Sequence Editor allows users to graphically transpose any audio material up or down by interval using a draggable pitch bar or a pencil tool for fine-tuned pitch correction, adding or removing vibrato and so on.
ZTX Pro quality presets
ZTX Pro quality presets allow users to achieve the best results for a wide variety of audio material, including "solo" for monophonic material and "efficient" for fast processing that adapts variably to the characteristics of the audio signal. PureDSP pitch-shifting has been preserved as an additional option, as it often produces best results on solo vocals (or other monophonic instruments), especially when fine-tuning vocals.