don't forget the other members of this genus that are harder to find, and often overlooked.
here are just some i copied from wikipeida.
oh also can't find this one website I've seen with a description and a list of many specie other than the few common ones you've suggested.
Theobroma angustifolium DC.
Theobroma bicolor Humb. & Bonpl. – Mocambo
Theobroma cacao L. – Cacao
Theobroma canumanense Pires & Froes ex Cuatrec.
Theobroma grandiflorum (Willd. ex Spreng.) K.Schum. – Cupuaçu
Theobroma mammosum Cuatrec. & Léon
Theobroma microcarpum Mart.
Theobroma obovatum Klotzsch ex Bernoulli
Theobroma simiarum Donn.Sm.
Theobroma speciosum Willd. ex Spreng. – Cacaui
Theobroma stipulatum Cuatrec.
Theobroma subincanum Mart.
Theobroma sylvestre Mart.[2]
cacaoguy,
have u considered growing some of the smaller and harder to find cacao relatives, within the genus Theobroma?
I've seen some that would be excellent for container culture, and if im not mistaken, some are better eaten as fruit, rather than for chocolate production, from seeds.
good Luck!
The only species that is widely used mostly for the pulp is is cupuasu, Theobroma grandiflora. It has excellent taste, especially in ice cream. Theobroma bicolor, sometimes called white cacao or Peruvian cacao also has a fair amount of pulp, to me it has a taste similar to chempadek. Both grandiflora and bicolor can also be used for making chocolate.