I’ve been using Polarstar Jack for years and have had a V3 fusion engine before as well.
If you want maximum customisation and enjoy tinkering around with settings I’d go for a Fusion engine or a F2. From my understanding the only difference between the two is the fusion engine replaces the whole gearbox and the F2 is drop in cylinder unit.
If you want something that you can drop in a play and not fuss around with too much, like what I wanted. Id go for the Jack. It’s a dumbed down version of the drop in cylinder units with minimal customisation.
All the units you able to select different rate of fires, poppet dwell, fire settings, safe/semi/auto, safe/burst/auto, safe/semi/semi, etc
just the Fusion and F2 you have more to play with.
The Kythera from my understanding is simply a mechanical,closed bolt, semi only, plug and play sort of thing. Something that interests me.
Your gonna need something to power it. Air or Co2. Personally again like I did, your new to HPA. Stick to air! Get yourself a paintball tank, a regulator and a line. You can get a product called an IGL which replaces the macro line coming from your engine. To save you a headache from it breaking on you mid game. I’d get one.
Can’t comment on Wolverine products simply cos I ain’t used them.
Hope this helps, always here to help
Mike
This is my gat. Just to show you what you can do with HPA