Ariel is one of my favourites too, and is the detergent I buy most often and keep going back to because of its reliability. Always cleans well on the first attempt, and so far I haven't found a stain it won't shift. Mainly I use powder, but sometimes switch to liquid when I feel like a change.
Bold is a major brand in the UK, and offers a choice of three different fragrances. Although it contains a built in softener, from what I can tell this is only marginally better than using detergent alone. But it does smell very nice, with a strong, lingering scent that hits you from afar. Use this on bed linens, and the entire bedroom ends up smelling of Bold for days!
A good "green" detergent I used recently is Clear Spring. This colourless liquid is fragranced with lemon and rosemary oils, but in the bottle actually smells more like Halls Menth-O-Lyptus sweets. Great cleaning, however the suds level is totally unpredictable, varying from one load to the next. Sometimes you see no foam at all, other times you get several inches of dense suds. For this reason, the 5 litre bottle I have stashed away will be saved for future use in a top loader.
As far as dishwasher detergent goes, only brand I use is Finish, the UK equivalent to Electrasol. Powder or tablets, I'm not fussy in that respect, but always lemon scented.