Well of course that depends where you are coming from ?
Question 1 have you ever ridden a 2 wheeled recumbent ? I suspect from the Question the answer is no ?
What every recumbent you chose to ride the easiest to learn will not be fast ! or if it is fast it will have a learning curve like crawling up the north face of the Eiger on your hands and knees !
What makes a recumbent difficult for a novice to learn to ride is :-
High pedals - compared to seat and ground
Lots tiller
Low - seat compared to ground
Laid back seat position
Short wheel base
So :-
Spirit has - High pedals - lot's tiller
Tomahawk - Low - laid back seat position - moderate tiller
High Roller - High pedals - lot's tiller - laid back seat position - high
The more of these attributes a recumbent has the more time it will take to master , if you build one of Brads bikes [ AND FOLLOW THE PLANS !! ] least you know the general design has been built and ridden by other people , so when you can't ride it should just be a matter of practice ?
In the world of commercial recumbent's somethink like this is considered a get on and ride recumbent for novices - almost vice-less and easy to start off on.
Pedals lower than seat and close to ground - seat relatively upright and minimal tiller - nice long wheelbase.
If you look in the Tutorials there are 2 recumbent's more suited to learning to ride , one of these bikes ?
Bandito and one just called Short Wheeled Recumbent
all the best Paul