here's a trick i used to vastly improve the quality of the Verizon DSL service. mind you, i cannot comment on any other specific region than my own as my experiences reflect only the service local to myself.
at the service entrance to the house, i mult'ed the incoming copper pair - one mult feeds a single microfilter and continues on to feed all analog phones. the other mult feeds the DSL modem directly near the service entrance. then, i ran cat-5 to the router in the office area.
this serves a few purposes. the signal provided to the analog phone lines is guaranteed to have the filter already applied. also, the DSL modem is further upstream, thereby reducing the distance to your local switch, and placing it ahead of your analog phones.
now, the DSL is nice and clean, very reliable. also, a good idea is to install very small, cheap UPS's for your DSL modem at the service entrance and for your router. uptime is great, now. before (when using the individual microfilters on the individual phone lines, and having the DSL connected to one of the unfiltered feeds to the office) there were problems with dropouts, unreliability, etc..
again, i cannot comment generally on the reliability of Verizon DSL service, but this technique works here.