I have a fluke, and I have a few ideals laying around.. This is my favorite piece that I've ever owned...I've had this thing forever and it's the first tool I start searching for when I needed to test data, Rg6, etc.

I bought this unit when I started doing a lot of data...Can quickly run through and make sure you've mucked something up, will tell you if your pairs are crossed etc...and will also just tone if needed...love it.

[Link: homedepot.com]