If you are going to a place that only has 91 you need to switch the car to 91 mode or stock mode. It is not recommended to run a tune for a higher octane fuel than what you have.
Yes i know John well, luckily where I am we didn't even have clouds during the storm. The bottom of my driveway is in a flood plain though so if we ever do a bad storm I won't be leaving. Luckily my house is about 50ft higher than that and would have to be really bad to reach my house
As for selling you on Revo, well I'm not in sales for a reason...
However. We have been tuning this engine longer than anyone else and have been working with this engine management longer as well. We make more power if you look at the total area under the curve compared to any other tuner although it looks like the new GIAC stuff is pretty close. Our SPS is 199 and offers you 91, 93, and 100 octane as well as stock which is about the cost just to switch to stock from most of our competitors. Also we are 499 for stage 1 and 549 for stage 2 so the flashes are also cheaper than most.
Really though everyone is going to be safe, most have switching, most can unlock your ecu now, everyone is going to make great power (we just make more). You will most likely be happy with whatever you get. If you are local to GSM though you have a great shop that has been selling our software for years and will have a great experience with them. I do not know however if they are equipped to unlock the 2010+ ecus in house just yet.