I brewed all three western style to the exact same parameters over the course of a week or so, and I was incredibly surprised by how much of a difference I could taste! The Spring picking was floral, fruity, and vegetal, with a sour-tart kick that coincidentally did remind me of pears. The Fall picking was buttery smooth, and the vegetal notes took a backseat to the floral and fruity ones. The fruit taste was more of a darker, sharper taste than the sour-tart of Spring, which I personally really enjoyed. Finally, the Winter picking had the strongest vegetal taste, but lacked the sour-tart punch of Spring or the sharp sting of Fall, making it an overall easy drinker. My personal favorite was Fall, and I've already ordered some more!
I didn't do a side-to-side comparison, but I drank one tea at one time. Every season has its unique taste (except Fall). Imo Fall A that I received was actually Fall C. My favorite is Winter, then Spring, Snow, then Fall (totally subjective/personal taste). Winter is very smooth, sweet, more floral, a bit vegetal. Spring is more fruity. Snow is not so sweet compared to others and it's super soft (too soft). Both Fall has an astringent finish. The tasting notes from MST is 99% helping me to taste and identify. Sample set from MST is definitely worth it!
The Spring one has lovely floral (truly Spring) notes with a delicate bitterness towards the end-palate. Highly enjoyable over several steeps!
I admittedly didnt do a side to side comparison but there didnt seem to be much difference between them drinking one one day and another the next.
I have been learning about tea for about a year now and doing side-by-side comparisons really helps me with my tea education. These Lishan Oolongs were all lovely. From the sweetness of the Spring to the buttery goodness of Fall B and incredible aromatics of the Winter Crisp, each was a special treat.