Best outlet

Porter Ports, no doubt.

Personally the Oyaide R1 outlets.
Read the following detailed reports
Oyaide R1 AC Outlet Report
1st impressions of Oyaide R1 outlet.

I use Zaputech Model #ZAPU2 10 amp units. They're not cryod', but instead are dipped in a frozen glass of water immediately before being shipped. This makes them much more conductive. These outlets utilize an alloy of hardened scurotium, and are hand brushed electro plated with 24.5 coats of golden fartonium.

Then they buff em'.

Available in the standard "Hospital Celery Green" or the optional "Butternut Squash Black".

These outlets have a remarkably transparent way of lowering the noise floor while raising the crown moulding area providing a seemingly larger dynamic retrospect.

Unfortunately since they're imported from Uranus, (due to present market valuation and the US oil market) they are only available in 10 amp. So, you'll need to reduce the size of the wiring in your home to meet any applicable building codes established in your area. Consult your local BOCA building codes and support your local Hells Angels.

Hope this helps, Ed.

I've never tried the Oyaide outlets however after reading some of the posts that Hotbird mentioned; I'd like to do my own comparison in my systems. Could be the way to go, I'd have to A/B it to my Porter ports, and other outlets.

Are your lines true isolated ground (i.e., grounded to the service ground buss where the power first comes into your main service box at the meter)?

If so, an Ebayer "polkmx" sells cryo'd Hubbell "HBL-8100IG" receptacles for $23.95. He sells other cryo'd Hubbells but these isolated ground receptacles are the only ones I've used.

I'm very satisfied with them.