Ejiao block is better because it is purified and has no other ingredients. Other varieties add some auxiliary materials. Although it is convenient to take, it is not pure, and the effect is definitely not as good as that of a rubber block.
Dong 'e Ejiao is famous, but the price is too high. Fupai used to be authentic, but now it is not as good as Dong 'e. Now the price-performance ratio of Ejiao of Huaxin and Saixing in Beijing market should be the best.