We had ours installed in the Autumn, so we've not yet had a huge impact that we'll get in the summer, but I have ZERO regrets.
We've got 14 panels plus a 4kwh battery. We were told in the summer when we were quoted that it would take 8 years to break even, but that was before the prices went looney tunes, so I suspect it will be much quicker than that. I genuinely think that the panels will add to the value of my house now - not just the improved EPC rating, but because people are actively looking for properties that are energy efficient.
Some solar panels can be ugly, but I've seen so many houses in our village with them on now, that it's not really noticed. I do like the way some newbuild developers integrate the panels directly into the roof - that looks sleek and smart. However, how often do you actually stare at your roof?
Ours are on the back of the house, so i literally never notice them.
If I look on my energy usage right now, I can see that I've spent just £28 on electricity this month. Because it was so sunny last week, on Monday-Friday last week, I spent just £1 per day - everything else was generated by solar. I did TONS of washing, and I have no worries using the tumble drier because its all solar generated. In contrast, on days when its overcast and I've had to do 2-3 loads of washing, it's cost me about £6-7 so that's a HUGE difference.