Our LBS in town Sells Cat Trike I've assembled a few, there, but not bought one Manufacturing quality seems Fine .. Welded Aluminum .
More comfortable may be HP Velotechnik
HP Velotechnik - Products - Scorpion Trike (Dreirad) with their rear suspension.
this one has 3 wheel shocks
HP Velotechnik - Products - Scorpion fs 26 Enduro foldable Trike (recumbent)