I took Rock's advice and started trying harder to flush out more local planes this week rather than looking so far and wide. My efforts are starting to pay off as I found 2 more 150's this week within 50 miles of home.
One boasts to have a good avionics package I'll describe below.
King KLX13 GPS NAV COM with Map
King KMA TSO24 Audio Panel w/3 Light Marker Beacon
King ADF
King KX78 Transponder with Altitude Encoding
Collins NAV/COM with Glideslope
Sigtronics SPA400TSO Intercom
PTT on both yokes

Sounds like a good combination to me, but clearly my knowledge is limited. That's why I posting you good folks.
Any comments?