RE: What IBEC to buy?
Ed,
Your last paragraph had a requirement that so many participating with 2.4 equipment often miss, or believe is inapplicable to them. The range test. Radio manufacturers do them no favors by leading them down the path of a glitch free environment becuae it's 2.4. Nor does using only a 2.4 radio for the glitch testing provide any safety. Any radio installation should be glitch free with 72 mHz equipment for it to be considered glitch free using 2.4. Unfortunately the effort and expense required to perform range tests using dual equipment eliminates all but the range test die hards.
Range test everything. Engine running and engine shut down. Note any differences and question the safety of flight if there is more than a 5 or 10% difference. Use a minimum distance as acceptable, such as 90-100 feet.