To clarify the question, You are asking if balansae is the only available crypt to grow to the surface? Is this correct?
If yes, then NO. There is also C. retrospiralis. It is much slower growing than Cryptocoryne crispatula var. balansae. It is also harder to find. There was some recently advertised on trade me but that was Balansae.
There are a few forms of balansae available internationally, but only a few are available in NZ, Jens red variety is an example.
Nav, Blassi is a form of C. cordata, which is a reasonably low growing plant.
Cryptocoryne pontederiifolia is definately a crypt. It comes from Sumatra. Slow to establish but does grow quite thickly once its happy.
Most crypts will grow lower with the more light they have. Balansae does best in hard water with a higher ph than most other crypts prefer. It is also better in situations with higher water movements.
HTH
Any more questions then fire away