Absolutely - i've got/had many products over the years that's not five stars, but it was what suits/suited me/my tastes best.
If a product is brilliant for you, it's your own personal five-star product!
I've said it many, many times, but it bears repeating. We test products comparatively and come to a team decision on star ratings. We then tell you what our opinion is - but until you see/hear the products yourselves (not just read reviews elsewhere, most of which are the opinion of a lone reviewer, not a team), you won't know if you share our opinion.
Obviously, everyone is free to disagree with our ratings, but they are ones formed from nothing else than spending a heck of a lot of time comparing, tweaking, watching and listening to products.