"After reading tons of posts about the LFE issue, it is hard for me to beleive that all of these receivers face the same issue."
According to this from page 1, the Denon 4306 does properly boost LFE. Correct?
Receivers boosting PCM LFE input by 10dB
Onkyo TX-NR1000, TX-NR5000E: can set +10dB, 0dB, -10dB, off; separate settings for PCM, DSD, DD, DTS and AAC
Onkyo TX-SR804E: can set +10dB, 0dB, -10dB, off; unified setting for PCM, DD and DTS
Denon AVR-2307CI, AVR-2807, AVR-3806, AVR-4306, AVR-4806CI(AVC-A11XVA): can set +10dB or 0dB; per-surround mode setting(?) - should allow separate settings for PCM, DSD, DD and DTS
Denon AVR-4806(AVC-A11XV): LFE control only affects DD and DTS, but PCM/DSD LFE gain is undocumentedly linked to analogue SW Level setting; reports suggest the default +15dB on SW Level may give +10dB on PCM LFE
Panasonic SA-XR700: no option, but appears to get it right
Yamaha RX-V1700/RX-V2700: No option. Latest test suggests it is okay, but earlier reports suggested otherwise. Still not totally sure