The best thing about Oolite is that it totally customisable so you can include/exclude whatever suits you and fly whatever you like.
I tend to fly the ships that I am developing so that I can get a feel for how they work and feel (And hopefully spot any problems with them before I release them).
I previously tested a scaled down version of the USS Enterprise which is very much an uber ship and found what many have discussed i.e. that the ability to kill just about anything without much chance of being killed yourself does detract from the gameplay for me however this will be what appeals to others.
That said everyone has their own preferences and style of play therefore I would suggest fly whatever makes you happy. If you fancy a change of ship do so or perhaps play using a number of commanders for variety.
The important factor here is just enjoy the game as you see fit.
Or alternatively joint the dark side, start producing oxps and then find that you have very little time playing the game
The GalTech Industries Corporation - Building ships to populate the galaxies.
Increase the variety of ships within your Ooniverse by downloading my OXPs
Flying the [wiki]Serpent_Class_Cruiser[/wiki] "Thargoid's Bane"