[PC player]
Depends on how much of each you want to do, and to what extent (don't you hate answers that begin with 'Depends')?
I have an Asp for exploring 2kly+ and, when I can be bothered, moderate trading.
I have a Cobra that I used for (PvE) combat and smuggling.
Now, I barely touch the Cobra but run a Scout; it's now my default ship for the Bubble. I run it with multi-canons, 2 x sb and 2 x 8t cargo bays. You may say 'ohhh but the smuggling!?!1/!'; smuggling in this game isn't fully formed. You can smuggle from Station A to Station B and make 1t credit on your contraband, or you can run legal goods and make the same, but without the penalties.
The 16t is ample for smuggling as currently is in the game (imo ofc) because the best use of smuggling at the moment is via mission quests e.g 100k for smuggling 4 Personal Weapons.
DBS Awesomeness.
https://www.youtube.com/watch?v=ZPXf3v1bttg&feature=youtu.be
And anyone who says it's a slouch in combat:
https://www.youtube.com/watch?v=aDz1mDI586w
https://www.youtube.com/watch?v=s-f_gPVbbTQ#t=20
https://www.youtube.com/watch?v=RWpdg0AR4c0
The fact it has the thermal signature of an ice-cube and looks like a cross between a Harrier and Heli-gunship is a bonus plus, if you like the Viper you will like the DBS.