What does JJK vendor sell?

[Mannd]

I'm currently doing a chem pistol build and I'm not sure whether to choose JJK or Coretech. I know that JJK's armor could be useful and that they sell stealth stuff, but don't know what exactly. Coretech however sells plasma grenades which I could make a great use of with the gremadier feat that I picked. So which is better? I do use stealth as well, but can always craft gear for it.

[Eidein]

JKK vendor is like a mini constantine, he sells mostly everything at pretty high quality.

[Vokial]

JKK has some unique stuff to their own that are actually usable to some.

For example the JKK jacket gives +5 Initiative and I wore it for the final fight in the Arena to be able to act first. It also gives you +15 Persuasion, so a nice utility gear to have in certain skill checks.
In addition, it can sell the Hypno Goggles. This is actually a magnificent item, granting you a +20 to 30 Persuasion bonus. In a few rounds you can stuble on a +30 version and that's massive. Since my Mercantile is 80 anyway (that's what you need to pass the check within the Tchortist vendor if you have additional gear), leveling Persuasion to effective 70 doesn't cost that much and adding a whooping +45 of JKK items makes it more than enough for the game.

Regarding the items, it's nothing special. I had my best sniper frame from them though. Also, the JKK quests are acutally really cool.