If you are using VR, the Cobra is great. It reminds me of my 1989 Honda Civic Coupe (CRX) - but a lot bigger. The black carpets with grey piped edges. Sloping panels and bulkheads in textured plastic. Soft-glowing consoles. If you stand up, you can see the nose of the ship outside. The glass canopy slopes down from the roof around 3ft over your head down to the dashboard edge 5ft in front of you. The canopy looks to be around 16ft wide. The co-pilot seat is to your right an arms length away and there are two bulkhead tables either side of the pressure door behind you, topped off with textured galvanized steel plates.
The Viper feels like a race-car cockpit. Small and slightly confined, compared to the roomy Cobra.
The Lakon Type-6 is huge by comparison and I've spent a lot of time using it on the Oculus DK2. You sit on floor plate with your command chair in the middle suspended in a glass box. Peripheral vision is excellent and you can see below your ship which is something you miss when docking with the smaller ships. Your co-pilot is seated below you, out of sight in the lower cockpit and there are ships readouts on glowing blue screens on the bulkheads behind you.
The Lakon Type-7 is even better. It's enormous glass cockpit is like a greenhouse stood on end. It's like flying a combine harvester! I've missed more than one station because I was admiring the view of a planet while on approach. The view goes further back than the Type-6, as the glass cockpit is two thirds out of the main ship body, compared to only a third on the Type-6. Also the cockpit itself goes back a long way. There are steps leading up to a rear section with an area on both sides, which are probably for a navigator or co-pilot, but from the command chair it looks like a bar! Drinks anyone?
You have to take your hats off to the designers. These ship interiors are amazing.
I picked up an Imperial Clipper last night but haven't tried it on the Rift yet, so I am really looking forward to flying around this evening. The sound-effects are super sexy. It
sounds and looks like something from the 2009 Star Trek universe.
I haven't tried an Adder and I had progressed beyond the Hauler before I got my Rift last month. I will no doubt go back and have a go with these ships as well as the Eagle at some point. Currently I can earn enough in one trade run to buy any two of these ships, I shall probably start a collection when I have picked a "homeworld" for my various ships to live.
To the OP, I would say "Cobra Mk III" should definitely be your next ship. 325K CR for a fantastic ship. Spend 4M CR on it and you have an unbeatable all-round winner. Fast, tough as old boots, 20+ LYr range, 32T cargo even with scanners and other toys. It's the ship I go back to "to get things done".