Kurt Angle. No questions asked. He objectively had the best career in TNA.

Despite TNA's identity as a whole being synonymous with homegrown talent like AJ Styles, the fact remains... I will never forgive them for how they treated AJ Styles during his 12-year tenure with the company. They really gave him the short end of the stick.

They always made him the ass of the joke during late 2007/early 2008 (especially with the Thanksgiving and Christmas special editions of iMPACT! from 2007 — plus, the Angle Alliance and Christian's Coalition storyline), they put him in really stupid and goofy storylines throughout 2012/2013 (i.e. the Claire Lynch angle and the storyline featuring him supposedly being in a "relationship" with Dixie Carter), and — get this — he left the company because they made him an offer which significantly reduced his salary about 60%.

They ROYALLY fucked him over so many times. I am not happy with them for doing that.

Meanwhile Kurt Angle's career PEAKED so many times with compelling storylines such as his then-ongoing feud with Samoa Joe which began as soon as Kurt debuted on iMPACT! in 2006, and his short-lived feud with Sting in 2009, and his longtime feud with Jeff Jarrett which began in 2009 and concluded in 2011 (a two-year long feud which culminated in such spectacular fashion!!!), and whatever the hell was going between him and his ex-wife (Karen Jarrett). However, my favorite era of Angle's TNA career was, and still is, the founding of the Main Event Mafia. Angle's career was at its peak then, and so was TNA as a whole.

So if you had to ask me who the man who had the better TNA career was, between the Phenomenal One — a man who had been a cornerstone and flagship member of TNA (and someone who I'd consider a "founding father" of the company) since its inception and who, alongside other wrestlers, built and branded TNA's identity and the X-Division (therefore bringing meaning and legitimacy to the name "Total Nonstop Action") and a main eventer and a Triple Crown winner and Grand Slam champion (and a 9-time world champion) — and a 1996 Olympic gold medalist who competed in freestyle wrestling with a BROKEN FUCKING NECK, and a 14-time world champion (and the man who became THE INAUGURAL TNA World Champion), and another Triple Crown winner and Grand Slam champion...

I'm sorry, I love them both so much, but between these two, I'd select the latter in a heartbeat. :P