I had decided on the Cycle Analyst for several other features than measuring power usage, the Low Voltage Cutoff is nice, but there's just so many other features in that little beastie and it integrates well with the Infineon controller... As part of the package, it was hard to refuse.

For those not buying a package like mine, certainly there are alternatives... The Cycle Analyst is now at version 2.2 and there is a new manual posted on the manufacturer's site.