Looking for an LPM. any suggestions?

[Trevor]

As I said, datalogging can be added to the 3.1W for around 20$ if you DIY it
Can't easily add a screen to the 3.7W.
Also, if you're using (or plan to use) Windows 7, don't go with the 3.7W as the software is buggy and crashes all the time in Windows 7.

In all fairness, there are alternative datalogging tools.

Trevor

 

[ARG]

In all fairness, there are alternative datalogging tools.

Trevor

Right, that too

@OP Pergerine (free) will work with a 3.7W USB on Win 7