Just finished installing my new SRO 03. Really is a super generous window, especially coming directly from the RMR.
Just reading today over on PSTG, Hwansik Kim has passed 10k on one of his with no issue and a few other members are reporting 7,500+ with no problems. GJM seems pleased all around so far with his and hasn't managed to break one yet. SRO is appearing to be a winner so far.