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It´s a much more simple device than d16 drumazon, only six patterns per loaded preset, it offers also pattern drag and drop to the sequencer.
It also gives you the possibility to play polyrythms when sequencer notes and pattern are played together,
the UVI workstation host is also equiped with a arpeggiator to play some drum rolls for example with prime.
There are also a big pallette of effects and a multioutput function what routes the complete sound to a master effect chain.
The only bugs i found now, is that if you create Part 2 in Prime8 it receives no incoming notes from sequencer, no sound,
also it´s a little bit weird with the syncronity functions at the upper right of the control panel.
CPU Usage is about 6% at my 2015 i7 4710mq laptop

Together used with Drumazon it´s a really nice easy to control plugin with a independet sound,
especial when you like to play with drumvoice/tuning with only 4 knobs, to get the right dance mojo out of it in live situations,
So my favourite drummachines outside reason are:
1. Arturia Spark 2.5
2. Uvi Prime8+
3. Drumazon