I would not recommend buying 100 blades until you know that a certain blade works for you. So buying a sampler, like the Top Ten from TryABlade.com. Ebay and Amazon also have samplers.
blades are super subjective and one person's favorite might be your least favorite.
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+1
Yes, purchase a sampler pack with blades ranging from mild (VDH, Derby Extra, Merkur) to very sharp (Feather).
The VDH TTO razor is one of the mildest razors you can purchase. And the VDH ice tempered blades are one of the mildest blades you can purchase. That is a good combination for a new shaver just learning how to use a DE, but it is not optimal for a great shave. The optimal blade for you depends no only on the razor you use, but also on the toughness of your beard and the sensitivity of your skin.
One of the posts above recommended Astra SP blades. For many people they work quite well, but for me, the blades are barely sharp enough to slice through my coarse beard and they feel rough on my sensitive skin. I cannot get a close, comfortable shave with Astra SP, however, the similarly priced Astra SS blades do work for me.
The only way you can find out what works best for you is to try a lot of different blades.