That's great to hear. The whole purpose of this project was to help not only myself on brewdays, but whomever else I could as well. Make sure to download version 3.0 and transfer your brews to it. It's quite an upgrade over 2.0.
I'm not aware of any drawbacks. If there are any I'd like to see the research behind it. Kai has done great research over at www.braukaiser.com
. It's really great stuff if you get a chance to review it. Covers most everything you'd like covered on batch sparging.
1.25 q/lbs is perfectly fine as well. However, it's not going to get you 50/50 on your runnings. Plenty of ways to brew with even more opinions out there on how to do it. I've chosen to base my work on the best info/research I could find out there. It works great for me and many others. My opinion is if I'm going to spend all this time brewing I want to do things optimally as it should lead to the best product I can produce. I hope that others find this tool pushing/leading them towards producing a better product as well.
If you have other questions etc... please don't hesitate to let me know.