I travel quite a lot so I'm just wondering what the best network is in regards to roaming in the EU with data? I'm currently on Three and my girlfriend is on Vodafone, and every country we go to I always find that I have an anaemic and horrendously slow data speed compared to hers, and I'm seemingly always getting throttled hard whereas she usually has a fast 3G or 4G connection on Vodafone.
I'm looking towards Vodafone as an obvious solution to this, and will give up my unlimited data on three for 20GB on Vodafone for the same price. But I'm wondering whether EE or BT offer a decent experience abroad, or if they too connect to rubbish networks and throttle hard?
TLDR - Which network is better when roaming in europe, EE or Vodafone? Also, does BT Mobile offer same roaming packages as EE?