Duncan and Jojo both do good blades. Below is one of Jojo's blades in my handle (handling thread
here.)
I wouldn't recommend the Svant Djarv blade off the RM website -the angles are all wrong for me and it is very thick. I used it quite happily at first, but having used the alternatives since, it doesn't get much use. See below:
Comparison:
In hand shot:
I do like SD's other knives, including hook/spoon knives.
Whatever you go for, try and get a good, long handle. This increases grip options, particularly for two handed techniques on larger pieces, such as bowl carving (Robin Wood touches on this
in this thread.)
I am carving a bowl at the moment, using the knife in the first pic. It is a joy to use, though the handle could be longer still.
If you aren't keen to do your own handle, I think one of the two makers above might do you a complete knife?