I agree that the Tesla Wall Connector is a good alternative to using the 14-50 plug adapter and the Mobile Connector. However it would be an electrical code violation to add a power plug pigtail to the Wall Connector as Tesla does not provide installation instructions/information for adding a power plug to the Wall Connector. The biggest omission would be a temperature sensor that detects if the plug is overheating. Plenty of people have done this modification without issue but know that it is not code compliant. (It would be easy for a licensed electrician to remove the 14-50R and install the Wall Connector.)
I have an issue with the 18 foot length of the charging cord on the Gen 2 Mobile Connector. If I had to buy an EVSE with a 14-50 power plug there are many choices. You have to decide if you want/need to charge at 40 amps (on a 50 amp circuit) or if 32 amps (40 amp or 50 amp circuit) is adequate. There are many off-shore made 32 amp and increasingly 40 amp EVSE with a 6-50 or 14-50 power plug. IMHO many reviews on Amazon show that these off shore 14-50 equipped 32 amp and 40 amp EVSE are not well engineered or manufactured and they fail within the first year.
In 2020 I purchased a 32 amp capable EVSE from ClipperCreek that was sold under the brand/model AmazingE, Fast EVSE. The AmazingE brand of EVSE used a ClipperCreek circuit board. Unfortunately the AmazingE Fast 32 amp EVSE is no longer available.
ClipperCreek made some of the best US designed and built EVSE. ClipperCreek has been acquired by Enphase.
Store | Enphase Only the higher end consumer and commercial ClipperCreek EVSEs are available from Enphase.
Another manufacturer to consider is Grizzl-E (made in Canada) The Grizzl-E Classic 40 is available with a 24 foot charging cord and comes in black, white and even cammo. The Grizzl-E Classic is not Wi-Fi or BT enabled, just a basic EVSE. The Grizzl-E Classic is good value in a 40 amp capable EVSE.
GRIZZL-E – Level 2 EV Charger 10 кw – Simple. Reliable. Affordable.
Amazon is another place to start your search for an 14-50 plug equipped EVSE with a 24 or 25 foot charging cord. There you will find EVSE from Blink, Chargepoint and Juicebox to name a few. These EVSE are approximately twice the price of the off shore EVSE. I have no experience with any of these brands. Also see if WalMart, HomeDepot or Lowes has what you want in an EVSE.
I would bet the safety of my house on a ClipperCreek HCS series EVSE either HCS-40 or HCS-50 available for a hard wired installation or with a 14-50 power plug, I believe the 6-50 plug is also available. (The 6-50 receptacle and plug is similar to the 14-50 except it has no neutral connection.) The 6-50 receptacle and plug is found on some welding equipment and is also more common in Canada than the 14-50 receptacle and plug.