OZ will be your best option when crediting to SQ. Both Korean carriers (KE and OZ) have some aircraft equipped with new biz seats (flat at an angle). Check the Asiana forum for details. Most importantly, you can save some money when booking with a Thai TA -- or one of our FT TAs specialized in ex-BKK/CMB travel (I'm not sure if TOS allow mentioning his handle, but I'm sure he'll PM you if he reads this thread). OZ C fares are $962+ each way, and KE Z fares are $1025+ each way. Flying into LAX will save another $150 each way.