Precisely why I ditched my Spectrum gear and went for a Turnigy with FrSky module, as I use to have numerous brownouts and slow relink times (using latest version Spectrum 6200' with satellite) and never found a reason or resolution. Even sent my gear back for testing but no problems found, yet other people I know with the same gear have never had an issue. I fly large scale gas and use the FrSky telemetry recievers with peace of mind, been using them for 6 mths now with no problems at all. Pricing is great on the recievers and the Turnigy transmitter with upgraded firmware has so many possibilities in regards to mixing setups.
There are mixed feelings on my setup but I have found that those that are negative have no experience with this setup. I guess it all comes down to personnal preference and whether or not you feel comfortable in using a $150 radio on an expensive model.