I’ve only eaten at LumLum twice. It was good, but I wasn’t blown away. My first impressions of Cha Long were much better, and so were my second to 10th+ (the last just two days ago). Here’s a dedicated LumLum thread to help you compare (use the two I linked to above on Cha Long).
Ultimately, it will boil down to which menu sounds more appealing to you. If you pick Cha Long I can suggest dishes I’ve liked.
ETA: Operation mincemeat is right up your alley, with your feeling for language, and the absurd. I saw it in previews.
