Jake,
The Riba HT mast is a quality mast. I only know of one that broke and that was from getting tossed a couple hundred yards in a tornado (it was mine, so I know the laminate, fixed it and sold it.) Its got a better profile thant the i20 mast.

Riba makes chassis parts for Ferrari...

Someone asked about the Tornado section that Forte makes. Its way heavy, I bought one and returned it. Its an older style profile. Lars Guck ground the mast track off a aluminum T mast and gave it to Forte, so you are getting an oversized section based on an outdated shape. I wasnt impressed.