DSL is less expensive than cable but is slower. Cable is faster. Typically cable download speed is 6-12 Mb/s and costs about $45 per month.
AT&T DSL Plans
AT&T Yahoo! High Speed Internet Express Package
384 Kbps to 1.5 Mbps download speed
128 to 384 Kbps upload speed $14.99/ month
AT&T Yahoo! High Speed Internet Pro Package
1.5 to 3.0 Mbps 384 to 512 Kbps $24.99 /month
AT&T Yahoo! High Speed Internet Elite Package
3.0 to 6.0 Mbps 384 to 608 Kbps $34.99
https://swot.sbc.com/swot/dslMassMarketCatalog.do?do=view&serviceType=DYNAMICIP
Your specs are totaly garbage:
"DSL vs cable modem. DSL 600 mbps vs cable 1.26 mbph"
600 mbps means 600 million bits per second
1.26 mbph means 1.26 million bits per hour
600 mbps
NOBODY has a 600 mbps internet speed. This is about 60 times faster than cable which is the fastest home service available.
1.26 mbph = 21 Kbps (Dial up speed)
B = Byte; b= bit; 1B=8b