Any recommendations for a data logger/display that can track voltage, current, speed, etc?

It looks like the eLogger from eagle tree systems may be my best but I'm wondering what else is out there.

Most transmitters today can show telemetry data with some capable to log it to a memory.
The Celero-X is the one to go for if it will be released.

And then there is homebrew... Several Arduino projects can be found and I have made one based on an old datalogger. It can handle up to 17 sensors and show it on a modulair setup interface.
https://www.youtube.com/watch?v=cwkVENYaK-k

Unfortunately the transmitter I have does not appear to be able to track the current, it's a Spektrum DX4R.

Transmitters will track voltage, not sure how many will actually do current.