i cant find info on it on bels home page,i assume its old but is it still good,it has this info on ebay

VG-2 Guard: provides immunity to the VG-2 (Radar Detector Detector)
Fundamental Mixer Technology (FMT): detects Radar using the fundamental mixer response for optimum detection range.
Quartz Resonator Calibration (QRC): targets incoming signals through precision scanning and identifies them as true traffic Radar.
Vector LXi Plus Features:

Undetectable by the VG-2
Complete X, K, Super Wideband Ka Radar (33.4 - 36.0 GHz) and Laser detection
Front and rear Laser detection
Advanced Road Hazard Alert
Separate audio/visual alerts for X, K, Super Wideband Ka Radar and Laser signals
Instant-On/Pulsed Radar warning
Memory Retention for preferred settings
Dim and dark settings for day/night travel
Automatic & manual muting of audio alerts
City mode for commercial/industrial areas
Radar Signal Strength and Laser Meter