My experience with Philips Hue is similar to my one with Apple......it just works and it works well.
Bought my first 'starter kit' in the UK from an Amazon deal one Xmas and never looked back.
25 bulbs/lights, 6 dimmer switches and 2 motion sensors. Never had to replace a bulb, not once.
Tend to use iConnectHue app to configure the dimmer switch as you can then use all the buttons exactly how you want. In the nursery for example, button one sets overnight mode for the baby, button two is both bulbs on 50%, button three is both on 100% and button four is all off. Its so customisable.
I am sure there are cheaper alternatives out there but ultimately I could have bought a Samsung Galaxy instead of an iphone if my primary driver was cost. I want things to work, I want them to be slick and I want them to last.
I am fine with the existing dimmers personally but the new ones look ok, nothing jumping out at me as a big seller. New lights would be interesting, we have the 5m outdoor one around the soffit of our garage at the moment and I have some GU10 bulbs in IP67 enclosures mounted in the deck.