Need help buying trisuit

Wubby

I've been using desoto Tri shorts and top for the past 1 year for sprint and Olympic distances. I'm planning on doing a high iron man soon and need help choosing a one piece suit.ive shortlisted 4: 1.desoto Riviera closing 2.louis barbeque LGneer 3.castelli sanremo 4.orca 226 Any advice would be appreciated including new recommendations.thank you