Camac Melusine 38-string
This is an exceptionally versatile instrument with a range of nearly five and a half octaves. It plays celtic music with warmth, Latin music with brightness and classical music with a piano-like richness. I've played many folk harps and this model is the best all-rounder I know. Its 38 nylon strings give an exceptionally bright and consistent sound. Acoustically it is loud and it produces lovely harmonics. I have three: black, brown and blonde. The Melusine also amplifies very well through a Fishman pre-amp and Mark Acoustic AC101.
Sanabria Paraguayan Harp
These are the loudest, brightest and most vibrant type of harps I know, and are made in Asuncion, Paraguay, based on the harps taken to the New World by the Spanish Jesuit priests in the 17th century. They have evolved into a very rich and sweet sounding instrument, especially powerful in the bass, and can be played with real power. I have plucked this 35-string Sanabria in a local restaurant, Glastonbury´'s Galatea, and been asked by a lady diner to 'turn it down, please!'. It was not amplified, of course.
The harp has evolved in many different ways over the centuries, and I describe this in more detail in my talks. My personal choices for the 21st Century are as follows...