Is Fiber optic better then Comcast 8mb?

i recently updated my network to 8mb comcast cable internet but for some reason i dont see much of a diference between 8mb and 6mb !!! i am kinda getting fed up with comcast and i was wondering wat is fiber optic? Is it considered T3 and is it better?

also comcast supposedly says they are comming out with a 16 mb upgrade in a few months and i was wondering how good t hat would be or if anyone has heard of it?

comments?

I'm kinda tempted to say "duh." Your previous 10 sec download will now take about 8 (7.5, actually). Your previous 5 minute download will now take about 4 (3 min 45 sec). And, this is assuming you are comparing at times of similar loading on the cable from everyone else.

I had comcast and switched to Verizon's FIOS service.

Comcast is like a big party line. More users the slower it gets. They seam to have long delays. The uplink speed is where most of there slowness comes from, 256-384k. Ping times can be long.

I second this opinion...

T3 (or DS3) is a 45 Mbit leased line and T1 (or DS1) is a 1.5Mbit leaased line. SDSL is Symmetric DSL where up and download bandwidth are the same and can be done either over POTS or ISDN (which is usually one channel in a DS1).

T1 and T3 have no overbooking and hence are very expensive compared to SDSL. SDSL bandwidth can exceed T1 bandwidth.

As to the OP's question, fiberoptic is usually referred to as Fiber to the Home (FTTH). The infrastructure must be in place for that, every hous will have a sperate fiber coming in and an Optic NTU. This is very expensive to lay down, and is generally only set up in areas which are densely populated.