Wanting speakers for my legacy. Which route should I take?

Power handling is a poor way to judge the quality of a speaker.

There are a few different reasons that doesn't make any sense.

Primarily -- going by power ratings alone means you're buying Boss or Planet Audio speakers b/c they have ridiculously high power ratings. The problem is they are not honest.

Unless you go out an listen to a variety of speakers and figure out what you need to accomplish you're goals you'll never really know.'

One thing you can generally trust is the price tag. If a pair of speakers is $40 its highly unlikely it's high quality, or capable of handing a lot of power. If it's $150 there's a reason as well. It is not uncommon to see ~$500 pairs of speakers in high end SQ installations. If you look around (woofersetc.com is a good source) you'll find component sets that cost as much as a good used car. Most of the high end stuff falls into the 100-150w rms range.

There are a LOT of high quality speakers that will play extremely loud and clear with 50-100w rms.

You should listen to different speakers at a stereo shop to discover which sound better than the ones you have. Look at their specifications- frequency response and power in RMS watts. Better shops have technicians who know product and can explain what works best in your vehicle.