I asked this over on the lighting forum and really didn't get a good response. Maybe the folks here have some input.

We have 4" cans in our kitchen and we use PAR20 halogen lamps. I'm toying with the idea of upgrading them to LED. Obviously there a plenty of PAR20 "equivalent" LED lamps on the market. Halo and others make a "module" that includes the transformer and trim ring. Looks like the modules run about $25 more than the lamp alone. If it matters, we're not planning on using a dimmer.

What's the $25 buy me?