For light-tent product photography, almost any manual flash can work well because your subjects aren’t moving and you typically don’t need a lot of power. The key is not maximum output, but how you’ll trigger the flashes off-camera—look for built-in optical slave capability, a sync connection, or compatibility with wireless triggers.

The Yongnuo units are generally considered good value, and inexpensive manual flashes can work very well in this kind of setup.

That said, for a light tent, fixed continuous lights may actually be simpler than flash. Since the subject is stationary, you can use a tripod and longer exposures, which makes cheap continuous lighting easy to work with and lets you see the lighting effect directly.

So:

• If you want flash: a budget manual Yongnuo-style flash is a reasonable choice.
• If you want the simplest setup for product shots: consider inexpensive continuous lights instead.

If you do choose flash, prioritize reliable off-camera triggering over small differences between similar models.