The G40 is Canon's most pro-ish consumer camcorder, with full manual controls including the ring on the lens and a control dial on the bottom, as well as a removable lens hood. Without that it's pretty compact.
All three models in the R series are identical save the memory configuration and NFC. The lowest-end R700 lacks internal memory and NFC. The R72 with 32GB built in and the R70 has 16GB both have NFC.
You see that humongous double-capacity battery? In order to improve battery life, Canon now bundles in a high-capacity battery instead of making any changes to the camcorder itself. Canon claims 180 minutes of recording time per charge.
