I bought my kit from openflightsolutions.com and took about 10 min to assemble. Openflight is now offering a fully assembled package for about $25 more than the unassembled package. This kit comes with dual band adsb with remote ultrasensitive antennae. This package has been bulletproof and I use it on both Ifly and Ipad mini. Performance wise it is equivalent to the Stratus II (which my lady friend has) except that the Stratux will feed Ipads and android devices (unlike Stratus II)
The owner/developer of OpenflightSolutions is Steve Sokol. He had a big booth at Osh this past year. He is very responsive to questions and usually is the one who answers the phone.