I can't totally agree. If a good look at 129 there is a little less rain fade and almost no problems with snow collecting from the WA. I have both arcs.
The wild card is not having to aim at 77 also. That may raise the EA signal, lessen rain fade, just be left with more snow collecting. By the way - with WA in something like 13 years I can count maybe twice or three times snow collecting and blocking the signal, in about three years or so on the EA it's more often every winter, and several times in some single snow storms. On all those occasions except once last Winter the WA was clear of snow.
As for rain fade, Tampa and some other Florida installations went from EA to WA because of less rain fade, the difference there is much heavier rain on a regular sometimes daily afternoon basis than you see to the North. He may well see less times he loses a signal with the WA but he has to have a good look at 129.
I also have receivers looking at both WA (1000.2) and EA (1000.4.) Though I live in the southeast, without the elevation issues on the 129, and of course no snowfall issues with the EA 1000.4. I would say the 1000.2 WA and 1000.4 EA are comparable in rain fade length and duration at my location.
With 129 being at half the elevation of 77 in Raleigh, you're going to have to hope that there's no obstacles in the way. I don't think that Raleigh has enough snowfall to worry about collection, even if it does, depending on the dish location, one can simply place a garbage bag on it, use a super soaker with warm water, or install a heating element. It really depends on LOS. Perhaps you are right, WA would be the first preference, however since OP stated that they had issues before with WA, then they should try EA. However depending on when they had Dish, the issues could have been related to the old wobbly EchoStar V, the weak Dish 1000.0, or both.
As for rain fade, technically with EA and WA having comparable signal levels, WA 129 could actually experience more rain fade more often in Raleigh, since the dish is looking much lower towards the sat, and thus, looking through more atmosphere. The only reason the WA 110/119 SD TPs have "higher" signal strength is due to the QPSK modulation versus 8PSK on HD/EA. Granted 72.7 and 77 need the larger 1000.4 in order to get comparable signal levels to the current Ciel-2 @ 129 with the 1000.2. Regardless with comparable signal strengths the only factors that would change anything would be snow collection (as you stated) and the amount of atmosphere that the dish is looking through (in this case 129 has a lot more atmosphere to look through.)
It is because those TPs are "common" CONUS TPs that host a wide variety of satellite programming for the entire contiguous US. If you can't reliably pick up those transponders in teh contiguos US, then chances are that you will not reliably get any of the other CONUS TPs either. Also the choosing of 14, 15, 16, & 21 could also be related to finding certain issues with some setups that involve lost of odd transponders (as in odd-numbered like 15, versus even numbered, like 16.)Anyone know why those four in particular.