Hand 1 my auction would go: P - 1S - 2♦ - 3D P - 3S - P - 4♠- All Pass. Hate X, and I have no experience in Equal-Level-Conversions. Hand 2: 2NT-3H 4C-4H 4S Assuming 2NT=20-21, 4C is my only form of superaccept, 4H a re-transfer. If South is not superaccepting, I would still bid 3NT with N's hand. It's vul, 4count with some intermediates - good things can happen and then South would have an easy 4S bid over 3NT.