If you have a laptop, the LC2 (used to be LC1) is IMHO the best bang for the buck.

Data logs direct to laptop plus if you go EFI down the road you don't need to buy a wide band controller.

It will also run a gauge so you can install it permanently if you want.

I have the LC1 running the wideband for my ancient Holley 950 Commander EFI.

Kevin.