Raven's Talon is one of the best very heavy fighters available for pirates and mercenaries - and surely most expensive.
"One of the best.. and "most expensive" Doesn't quite work with Xenos for me... not if every xeno has it. But a few yes.
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And I actually think RT is a great ship for 1vs1 for certain type of loadout, partly due to beiing non-vanilla and partly due to the great gun positioning and big powerplant.
Not a ship for huge fights though.
and Razr is not allowed to speak here:P
If you don't have problems with the Xenos buying the Eagle, then there should be no problems with them buying a RT. I mean, it isn't even 300 thousand. Even if you consider the Black Market "fees" for them to circumvent the apparent Junker control, we'd be saying what, another 30% over it? It's still a nominal amount when you take into account what they can get without questioning.
And as for the ship being good for 1 vs 1, it depends on the pilot's fighting style and, in their particular case, I don't think they do much 1 vs 1, unless the other 1 is a gunboat or heavier.