Chuck writes:

<<<If I ever decide to fly in circles for a long time, I will be sure to buy a Chelton.>>>

Exactly my point, Chuck. When would you fly in circles for a long time? In a holding pattern, of course. A holding pattern is a standard rate turn for half the time which averages to a half standard rate turn continuously. The two minute frequency is well within the integration period of the gravity aiding.

When would you fly a holding pattern? In actual IMC.  Accelerating climbing turns during departure are also deadly to most low end AHRS.

If you plan to fly actual IMC, the Chelton ADAHRS is a good choice.

If you are a VFR only pilot who only flies in the clear and are looking to have glass bragging rights then buy whatever EFIS system you can afford and looks pretty in the hanger. If you plan to survive flying actual IMC then you need to leave the toys on the ramp and get some serious tested and qualified hardware.

Regards
Brent Regan