For real-time weather data in the cockpit, I use the ADL200 weather receiver from Golze. The unit receives weather information via satellite and overlays it directly onto SkyDemon, providing excellent situational awareness during IFR flights.
Although my Diamond DA40 G-ZANY is not equipped with ADS-B In/Out, the ADL200 fills this gap effectively. Unfortunately, full ADS-B weather coverage is still not widely available across Europe; it currently exists only in limited trials in a few countries.
The ADL200 has proven to be a reliable and valuable tool, especially when flying in instrument conditions or when making weather-related decisions en-route.
You can read the full review I did a few years back on my website.