I moved to another network last week (away from Vodafone after many years). Jeez, the speed I was missing out on, think I used to get 3-5MB at best and reception was awful. Actually had 7-10 days of no mobile phone calls a few months ago, no apology from Vodafone at all - I had to ride a few miles away from home to pick up messages! (unless I was near a landline, then I rang myself to get messages).
I’m probably late to the party, but it is quite nice having this extra speed, though completely pointless for most of my day.