Missions & Complexes

I assume you have at least some sp in turrets. Then yes, your best move is to get a turret ship, that way your support skills will be worth something.

Vindi and kronus are probably very similar in the way you would currently play, except you can move (slowly) and do damage as apposed to the domi which when using sentry's barely moves. I don't believe you will see to much change in the way you play, unless you want to salvage as you shoot.
Mach is very different, your survival is dependent on moving. I find it fun to fly as you need to be paying attention. So I guess it depends on your play style.
For a fresh change however, i would go mach, even with T1 meta 4 guns it works really well.

A mach is by far the superior ship of the bunch you proposed, if not get a Vargur or Kronos.


Mach is not as passive, tank is not huge so you need to manage range and aggro. Neither is hard with its great speed, range and dps.

if i were you, i would first train for the vindi and then while you are already flying it train large ACs for the mach.

MAch is undisputed king of mission ships.

while it's a very good mission ship it's hardly undisputed.

Rattle, golem and domi navy issue all give it a run for it's money.

Mach is a class in itself so I won't comment.

I've been flying both Vindicator and Kronos and while objectively Vindi is better, in terms of ISK/hr, I am quite fond of Kronny.

Vindi:
+ has slightly better gank,
+ is less skill-intensive,
+ has bigger buffer (not really needed for PvE, but helps during ohshit moments)
- requires significant pimpage
- requires good deal of experience to fly properly

Kronny:
+ has slightly better tank,
+ easy to fit with T2 modules only, pimping helps but is not required
+ has shitload of fitting options
+ uses less ammo
- performs a little worse (I stress, a little, I don't have exact numbers at hand but I reckon it's c.a. 15% difference at most)

HTH

inside jokes with the person you're mocking doesn't really work that well when nobody else knows what you're talking about

Vindicator = paper dps for paper warriors.

We all know blasters have no range and rails suck, but it's the things that aren't apparent on paper that'll make you regret spending big isk on it.

Make sure you don't find out about the following things for the first time while in mission site:
-Locking range is horrible. It turns out 50km isn't enough for many missions. You'll have to refit sebos.
-Rail tracking is abysmal. It's not AC. Start moving? Turn on prop? Can't hit. Target far rats, oh right, gotta refit sebos.
-Why is this thing not moving? Oh right, speed of a Tempest.
-Fit webs to take advantage of web bonus? That's TC slots being taken up.
-Armor tank? 7 lows, that's 3 instead of 4 dmg mods.
-Shield tank? 5 mids, take away prop and cap booster, 3 mids for tank, no webs for you. Oh wait, sebos... good luck with that tank.

all of these issues can be mended by throwing money at the fit. although the question is why should you when a mach will perform similarly with stock T2 equip.