a JKD30 uni failure.
Your axle is only as strong as your Uni circlip! Both D44 and D30 run identical circlips.
D30 Superior cromo axles, Note the Full circlips. fitting these essentially make a JKD30 stronger than a stock rubicon JKD44 simply due to a circlip.
Stocks axles will not take a full clip unless modified heavily.
RCV's are another positive alternative to stock gear. Wise investment if you are after reliability.