RC, but you cannot compare different hours to achieve PPL in fixed wing vs rotary, with the 'full monty'. Besides, to advance in heli business, one often needs to hourbuild from basic CPL to be able to start FI rating in Europe/UK, which is another story.
Burning cash on twin heli IR is a gamble and not something can afford.
Oh, did I mention I see similarities between the airliners' self-sponsored TRs and SS ME IR(H)? Rewind to 10 years ago and heli pilots instructed for 2-3 years before having a shot at offshore jobs, in the UK.
Not necessarily so in other countries where fresh CPL holders can get into copilot seat straight away with relevant training required paid for by the company.
Neither route is cheap and both are getting worse and worse hiring prospects and eroding terms and conditions, partly due to the influx of rich kids who pay crazy amounts of money for stuff that used to be normally paid for by the company.