Having owned all the radios you have mentioned I guess the worst receiver is the FT-2000 owned 2 of them starting in 2006 a 100w and a "D" model. Then a FT-950 for a backup for a while that I traded for an FT-847 after another year i sold the 2000 and bought a FT-9000C. A friend had an Omni VII that I used for a while and never liked the preformance of the radio or the receiver he traded his for a IC-756 Pro III which he really liked. I traded my 9000C in May of 09 for a IC-7700 liked it for a while also I bought one of the TS-590s to go in my camper and use for Field Day but after using it for less than 3 weeks sold it didn't like the looks, quality or the feel of it.
In Oct of 2009 I pre-ordered a FTDX-5000MP received it in March of 2010 after 2 weeks of owning it I saw how bad the receiver and filters were in the 7700 were and unloaded it. Still have the FT-5000 but this year I bought a K3/P3 combo after owning it for about a month I bought another K3 and another P3. After the months of compairing the 5000/K3 I have decided to sell my FT-5000 and go with the K3's in a SO2R setup for some DXing and a few contests the receivers were so close you could not tell the difference. Where the difference came to bear was in the superior filtering of the K3 and close in SSB rejection and the superior P3 combo.
You would be hard pressed to beat the K3 for price factory assembled $2250 K3/100 base model and build it up from there I have a lot more options on my K3's than my 5000 for sure. The scope unit on the 5000/3000 really are a joke to say the least you might as well plan on another $500 and up for a decent panadapter for the 5000 I did. There are no down side's to buying a K3 and with it you decide exactly what options that you want in your radio not what someone else decides for you. Another plus is that Elecraft has unequaled in the industry support, customer service, and a contineing effort to improve there products both older and new with firmware and software upgrades.
73 de Fred N0AZZ
The License is Only Your Starting Point in Radio!
MVDX/CC of SW MO., DX Hogs, OARS, NARC, NCDXF
ARRL member, ARRL and W5YI VE
DX the thrill of the chase
""D-STAR making use of the 2/ 440m repeaters for real world Digital Voice usage around town and around the world""
" Not one of us can do what all of us can do " ** Max Lucado