Landline all the way for me. I don't think there's another product or service, not even with the name Maytag on it, that can match the reliability record of landline service or Western Electric hardware. I own a few WE 302 sets both metal case and bakelite from the late 30's early 40's, a few WE 500 sets from 1950-56 or so, a 40's vintage lineman's set and my most prized 1931 202 model with original E1 style handset and 1931 bell box. The 202 is the only one currently connected and I use it regularly to make calls that don't require a touchpad. The original receiving elements on these phones are kind of squawky but apparently there were never any retrofits made. Combined with the old bellbox hardware, they make a loud hollow click when dialtone (and dialing) starts and stops. It's just like in an old movie. The E1 handsets were phased out and replaced with the F1's which had better receiving and transmitting quality. My E1 has been retrofitted with an F1 transmitter but it still allows for the "spit cup" mouthpiece to be used so the early look of the handset remains the same. Western Electric was routinely replacing the original transmitters on E1 handsets with the new F1 type as these phones were returned, and eventually they started placing the F1 handsets (as found on 302's) on the 202 bases. This is why finding a 202 with an original E1 handset can be difficult.
I have found that Old Phone Works is the best vendor out there for phones and parts. I've provided the link below. I highly recommend them for any old phone parts a person might need. The guy I spoke with there when I was looking to replace my E1's transmitter steered me towards the F1 retrofit and I am glad he did. I wouldn't be able to use my 202 with an original transmitter because even in pefect condition, the transmission quality was inferior to that of the F1. They also offer internal and external touchtone conversion kits for rotary phones.
Rich, the ringers should still work on your old phones. I have an old chime box that works just fine on the voltage Verizon is sending out. If the ringers aren't working for you, it's likely a mechanical or wiring issue inside the phone set itself and not about current or voltage.
Re: the old alpha-numeric phone numbers, believe it or not, you can still find references to those old exchange names being used in certain day to day telco operations. The first phone number we ever had when I was a kid started with AXminster 6. Then we had CYpress 5 after moving to a different part of town. I have re-created our first phone with the CY-5 number on a 302 model and even have the original CYpress 5 number label on it, which I rescued from underneath a later label that was all numeric.
Rich, if you're interested I could probably get you the alpha-numeric version for your current landline number if you provide me the first 3 digits.
Ralph
http://oldphoneworks.com/