Solid state, I haven't had an issue with the Seal-Tite making an evenly compressed crimp, but that could be because of the particular connectors I've used with it. If you already have the Paladin tool, you might want to try
the Paladin connectors. I haven't seen them online, but the local shop I use for my network cabling supplies carries them.
One thing you might want to do is find a local Paladin dealer and talk to them. They most likely will let you test the different ones they sell if you plan on buying a decent amount. Although these shops cater to contractors, I've never had a problem getting solid advice and service from the few I've dealt with for data and high voltage materials. You might pay a bit more than you would online, but it should still be very reasonable.