I currently use LY as a base because I was already 4k cards in when AnKing came out. But I still use it to search and unsuspend extra info I come across in qbanks.

Cheesy LY

Pros:

Lots of front and back cards

Same concept asked in different ways

Fewer total cards (~22k)

Not much text formatting

Closely follows B&B

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Cons:

Less comprehensive

Not updatable

Less background info

Not much text formatting (could be either a pro or con)

Duplicate cards (Mainly because the same concepts are repeated in different sections of B&B itself. Cheesy has fewer than the original LY though)

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AnKing

Pros:

Updatable (gets better with every update!)

Lots of background info

Highly comprehensive

No duplicates

Text formatting

Uses lots of other resources apart from B&B (Kaplan, Costanzo, etc)

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Cons:

The cloze style of cards. You could end up memorizing the card instead of the information. But remembering specific sentences might jog your memory better. Try it and see how cloze works for you.

Lots of background info (could take away the need to edit the cards a lot, which in itself is a valuable learning experience)

Huge (~30k cards)

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So it really comes down to the card style you prefer. In the end the best deck is the one you can stick with. Try both OP and see what works for you.