I had my first 4m QSO this evening, on the Wouxun KG-699E, with Guy G0UKN, who lives about 6km from me. With the supplied antenna I was 5-8 to him, but with the longer Garex centre-loaded whip (www.garex.co.uk ) Guy gave me 5-9+, so at least a 6dB improvement.
Guy said the audio was a bit thin, but this improved when I switched to 'wide' mode. Unfortunately there is no mic gain menu on the 699E (or if there is, I haven't found it).
I will write a longer review of the Wouxun, when I know it a bit better, but for now:
"六九九" 是 很 好 !