Besides the difference in sample rate you noticed, the NI 9228 also has some built-in filtering options.
Keep in mind that these are both 60 V modules, so if you don't need voltages that high, there might be other options that are a better fit for you application at a lower price. As for whether your current and torque measurements are supported for either device, that entirely depends on the sensors you're connecting. Although FlexLogger lets you read a Torque measurement from your NI 9229, the NI 9229 is only capable of taking voltage electrical measurements which FlexLogger can then scale into N-m or ft-lbs. This assumes that you have a torque sensor that gives you a straight voltage output that you can scale appropriately. If you have a bridge-based torque sensor, you may need a different module.
Similarly, for current measurements you're not able to directly measure current with either the 9228 or 9229. Instead you would need to hook up an external resistor and configure the channel as a "Current Shunt" sensor class. You tell FlexLogger the reistor value you're using, and it will convert the observed voltage into a current measurement for you.
As to which module is right for you, the best bet is to compare the data sheets for both devices to determine whether the sensors and measurements you have will be satisfied by the module. Like Briana mentioned above, simulating the module is also a great way to test it in FlexLogger to see what type of options you will have available to you!
