My observations apply to central jersey and verizon, comcast and optimum online

Verizon's service itself is slow compared to similar priced cable (>768/128 vs 1700/90 or <4000/1000 (optimum online

if you can get it)

Verizon tech support is OK but they are castrated by the unions and the people that turn on and off the service in the switches. Unlike cable which is there almost instantly it takes about 3 weeks (!!!!!!!!!!!!) to get a dsl line.

Comcast support which was very poor initially has vastly improved over the last year

Comcast reliability is an issue if you live away from the main cable strands.

Verizon service was down only a couple of times in over 2 years

Verizon uses the PPPoE protocol and forces you to load this cr@p software on your machine. Unlike the cable set-up software, which is useless but unintrusive, this program can impact system and program stability. Ideally do not install it, but use a DSL gateway firewall router to sign on permanently, then you do not need the software at all.
This whole thing about dsl being independent of the number of subscribers is bull... With cable you may find a traffic concentration in your area but nothing more downstream. With DSL you get ok to next concentrator, and then it's the same - you share whatever bandwidth is available with everybody else who has the service.
Yo