Jack Gold, an analyst at J. Gold Associates, defended Toshiba's approach with the 13-in. model. "There is no ideal size, just like there is not one size of car, TV, refrigerator, mattress or even PC screen," he said.

"At 13.3 inches, it is probably not terribly portable in the sense of putting it in your pocket, like you might with a 7-in. or smaller size, but it is probably great for uses like looking at X-ray images in a medical setting or detailed schematics and diagrams in certain work situations, " Gold said.

The display is the most expensive element in a tablet, and the larger the display, the more expensive it generally will be, Gold said.

The Excite 13 will go on sale June 10 for $650 for the 32 GB model, and $750 for the 64 GB model. Toshiba will sell the smaller Excite 10 starting May 6 for $450 for 16GB, $530 for 32GB and $650 for the 64 GB versions. The smallest tablet, the Excite 7.7, will have a price tag of $500 for the 16GB version and $580 for the 32GB version, when it goes on sale June 10.

While Gold suggested the Excite 13 could be used in the workplace, Toshiba called it "ideally suited for the home" for sharing photos, Web browsing, playing games and watching movies with a group. It is powered by a quad-core Nvidia Tegra 3 processor, has 1GB of memory, and is marketed for gaming and multitasking.