Sword Art Online

[Ryllharu]

If you ask those two above, they'll say yes unconditionally.

If you ask people less enamored with the series, they'll say it is just more of the same: Kirito being the ultimate Gary Sue with an endless stream of girls fawning over him. All of the criticisms discussed in this thread are valid ones.

There are some interesting connections to Accel World, as you see the technology used there be developed.

I would say wait for the inevitable sequel anime.

I would also add that the bigger problem is the novels themselves are terribly written. Both Sword Art Online and Accel World. Even translated (and extensively edited), they don't make a lot of sense. There are large portions of it that are only dialogue and sound effects. When you're lucky, you'll get vague descriptions. Anime is really the only way to enjoy the two series.
edit3: Sword Art isn't quite as badly written as AW, upon re-review.

edit 2:
Also, most translation sites (and the official published versions) cut out the terrible sex scene chapter.