While the OP's question is different from the ones posed in the other two threads, the answers are sounding awfully similar. But then the answer to the OP's question should be very simple. If the OP does not like the current Marriott brands, the OP does not need to stay elsewhere, as the SPG hotels will still be there (unless of course, the post-merger Marriott family becomes so crowded that some former SPG hotel, which the OP likes, decides to leave).