With this said I would not discount an Eton E1. Sure, QC can be hit and miss, but if you were to get a good one they are surely a keeper. I had one for a bit, sold it though to get my R75. The R75 has more "tools" and computer control is nice, I would however pit the R75 against the Eton and that would be a tight race (with the Eton having a slight edge in broadcast listening (but nothing a little ECSS can't fix on the R75)). Both are very good rigs.PS. The "desktop" portables come with decent antenna jacks and have extra electronics that can withstand the signal of a full-size outdoor antenna. Some "portables" can use an external antenna but you need to be careful since they can overload the portable receiver -- and in rare cases, damage the portable.
I have owned the R-5000 for some time. Good radio! But I feel the Eton and the R75 have one up on it. Since the R-1000 is the little brother, I would not be that impressed. Of course the Kenwood was a decent rig, just lacks some of the features of the other two.
The stock filters on the E1 are great. While the R-5000 always made me wish for more filters, the E1 had me wishing for nothing. The PBT on a semi portable was a Godsend. The R-5000 of course has I.F shift (same as a PBT) but the filters left me wanting.
Now with all this said, I would save some more money and buy an R75. For utility and SSB use nothing will beat it in the price range. Sure some SDR receivers can claim the see all click to tune all title, I would place my bets on the R75 with a knob any day. YMMV!