What's the difference between laminate and solid wood tops?

Solid wood is a single piece (or two book-matched pieces) of wood all the way through. Laminate is thin layers of wood glued together, like plywood, with a nicer-looking veneer often on the visible surface. The difference sounds subtle. It isn't.

Tone and resonance

Solid wood vibrates more freely and consistently as a single, continuous piece, which is a big part of why solid-top guitars are generally associated with richer, more resonant, more dynamically responsive tone that also tends to improve somewhat as the wood ages and "opens up" over years of vibration. Laminate, being multiple bonded layers with glue between them, is inherently stiffer and dampens vibration more, which generally means a less resonant, more static tone that doesn't meaningfully change much over the guitar's lifetime.

Durability and stability

Here's where laminate actually wins, and it's not a small advantage. Laminate is significantly more resistant to humidity-related cracking and warping than solid wood, because the cross-grain layered construction resists the expansion and contraction that causes solid wood to crack. This is exactly why laminate guitars are popular as travel, beginner, and "beater" instruments — they tolerate humidity swings and rough handling that would seriously stress a solid-top guitar.

Cost

Laminate is cheaper to produce, both because the material itself is less expensive and because it doesn't require the same grade of tonewood that solid tops demand. This is a big part of why laminate dominates the budget and entry-level end of the market.

Which should you actually want?

If you want the best possible tone and are willing to be diligent about humidity control, solid wood is the better long-term choice, especially for a guitar you'll keep for years. If you want something durable, low-maintenance, and less precious — a travel guitar, a beach guitar, a guitar for a kid who's still learning to respect an instrument — laminate is a legitimately smart choice, not just a "lesser" one.