in my Opinion:
Save your T6 ship selection for the new ones coming.
If you play a DPS build, try a Negh'var.
IMOHPO, it's better than the Marauder, compare it side by side in the shipyard and you'll see the differences.
The Varanus has issues with it's repair platorms, I would recommend wait for a fix...
Other than that, it's alright, But I persoanlly prefer the carrier.
Guramba does look totally awesome, but, it's pricey in the Cstore and that's the only way to get it.
And, in the long run, the Raptor's a better escort. Guess it depends on if you want effectivness or cosmetics.
If want a Science ship, the Klingon carrier is still probably the best choice.
Despite it's slow turning rate it's a sturdy ship in PvE, in PvP it must have good team support and it'll perform well.
And, there's always the BoP set up for Science, although with it's very light hull it takes a different tactics to be effective.

With the new set up of the shipyards, it's very easy to side by side compare any ship.
Consider all your options.

You did see the title was for the best non-Klingon ship right? I assumed for cosmetic reasons the only Klingon ship that interested the original poster was the B'Rel she dismissed in her initial post.

Yeah, i already have a Neghvar, so my LG ship would be more for the cool factor, and seeing as im only gonna get one LG ship at this time i need to make the right choice....i just wanted to know if any of the other ships were broken like the Brel

oh and only my Avatar is female :p

Dude, now I'm all kinds of creeped out.

Gurumba !

Fairly nice pvp boat, find someone with a shield arc down, align, tractor....BANG.

Ship be gone, hasitally escape with engine batteries/deuterium.

And like almost all kdf tac boats it requires cruiser support.