Best earphone for the value

This one has enough isolation in the airplane.

The most important thing is that  its sound is musical with classical music like violin concerto.

I can live with this one for at least one year.

There is no need to rush into rabbit hole of earphone since I use earphone only during travel.

I owned a pair of Etymotics a few years back.  Good amount of mid and high end detail, but really lacking in the bottom end.  It's a single Balanced Aperture driver, so.... Also, it required a deep insertion to get good isolation.  Replaced it with a pair of CA Lyra II's which I really like, but they require a lot of drive.  Also have a pair of CA Vega's which are really nice also.  Finally, Picked up a pair of CA Solaris a few weeks ago.  These are the best of the bunch; loads of detail, smooth mids and really tight and fast low end.  I guess you can tell I'm a CA fan.

If you're searching for something inexpensive, look at the Periodic Audio Mg's.  They retail for $100 and they occasionally they put them on sale for $70.  I use them at the gym a lot.  If your willing to spend a little more, also check out the Periodic Be's.  They retail for $300, but I see them on sale for $240 occasionally,

I also own a pair of JA Audio Layla's, but the CA Solaris is better.

I guess you can tell that I'm a CA fan.  I haven't tried any of their entry level stuff, but the build quality of the units I own are first rate.  

@ prpixel 

https://www.head-fi.org/showcase/periodic-audio-beryllium-be.22397/reviews

Thanks a lot for your recommendation.

300$ may be sweet spot for earphone newbie.