If it is convenient I recommend making your own developers. It's both cost effective and gives you good control over contrast and print colour. The initial outlay for a stockof raw chemicals and a decent balance is not huge, especially when I see some of the prices being quoted here. I spend about £60 per year on restocking my raw chemicals and I do a lot of printing.
Of the branded developers available I use Ilford Multigrade, Agfa Neutol Warm, Dektol and Tetenal Centrabrom S which is a soft working developer. I am also a fan of Grade Select a two bath developer made by Fotospeed here in the UK but I know that it is available in most other countries.