I am thinking of finally getting a Power Meter.

I know quite pricey but looking for best bang for buck. that goes work with my Garmin and does accurate readings.

One that is easy to put on the bike? maybe a pedal types?
How are those Garmin Pedal power meters? reliable?

Maybe one i can switch between my road bikes ?

Thanks. i like to finally train proper.

DCRainmaker has a PM buyer's guide and updates it every 6 months or so. Go read it, then ask more questions because it won't all make sense until you've used one.

The first thing you need to decide is where on the bike do you want to put it? If it goes in the rear wheel, that's really easy to move from one bike to another, but they have to be the same kind. If it's in the crank, then you can use the wheels you have today. Pedals are also very portable and don't have different BB standards. Etc.

I have Garmin Vector 2s. I like them. But you need a torque wrench to install them correctly or they'll report the wrong power. PowerTap's P1 pedals don't have that need, but cost more.

+1: The Power Meters Buyer’s Guide–2016 Edition

What's pricey?

Any of the power meters that support ANT+ should work. I have a Stages and it works just fine with my Garmin 1000 and my Wahoo Elemnt. Stages supports both bluetooth and ANT+. The 4iii one also works well with Garmin.

I like to switch pedals around so I went with the crank based PM. Stages as does 4iii sell you the PM mounted to the crank arm on the non drive side. Super easy install - about 15 minutes.

Great advice here to check out the dcrainmaker website. He's the authority on bike power and there's no one even close.

You're going to learn an awful lot about your cycling with a PM.

J.

Is renting an option? In Seattle, there's a shop that will rent you one for $75 for a week. Just using the data will get you over some of the learning curve, and might answer some questions you have before you go and spend a lot more. Like whether you want other data such as L/R balance, etc. Or, it might not be possible or worthwhile for you.

I just got the 4iiii left paddle power meter. I absolutely love it. Works great with both the Garmin 510 and my new Wahoo Element Bolt.

I would highly recommend you investigate the 4iiii power meter.