Hi, ap001,
I'm not RF engineer. But based on my pass experiences, an advanced technology might not make you money within 2 to 5 years (maybe longer). Many companies with very advanced technologies failed just because marcket timing was incorrect while some companies with so-so technologies earned big chunks of marcket because they catched right train. This is from financial point of view.
But if you are young, and are very interested in advanced technology, you may select to dive into it (if you have no financial burden). Someday, you'll be a hero in your selected field if you work hard.
Anyway, you are luckily getting two opportunities in two hottest fields. Check your own status to make final decision. May you have bright future.
rh1101