Both are astonishing. So i will recommend you to go to leh Ladakh first for some extraordinary adventure and to enjoy the snow crowded mountain and then go for Meghalaya to fall asleep in natures arms. Cheers.. Hope i answered your question. ✌️
Both, I would suggest, as both offer different experiences, Leh offers beautiful Sindhu River, Monasteries, Pangong Lake (but barren mountains) whereas Meghalaya is a land of pristine waterfalls, Living Root Bridge, crystal clear rivers and lush green forests.
These two completely different terrains to compare. Both are extremely beautiful in their ways. Ladakh is mostly naked very high mountains with less of water while Meghalaya is mid high vegetation full mountains with abundunce of water. Its perfectly your what you want to experience.
Drive to Let - See the Colourful Mountains, Lakes, Snow, Loops, Adventure, Dessert, Stupas, Army, River Many More!!! Trek in Meghalaya - See Clouds, Greenery, Kinds of Flowers and Fauna, WaterFalls, RootBridges, Different Culture and Organic Food, Off-course Rain.