which one laptop Or desktop?

its bout time me buyin a unsullied rig but a laptop(desktop replecment)or a desktop?

btw if laptop i selected this cheap gaming one :D... Toshiba Qosmio™ X775 -Q7270 [price $1199 : here are the spec
Performance

Processor*
Intel® Core™ i5-2410M processor
Operating System*
Genuine Windows 7 Home Premium (64-bit)*
Graphics Engine*
NVIDIA® GeForce® GTX 560M w/NVIDIA® Optimus™ Technology
Graphics Memory*
1.5GB GDDR5 discrete artwork memory

Memory and Keeping

Memory*
6GB DDR3 1333MHz recall
Hard Drive*
640GB HDD (7200rpm)
Optical Drive*
DVD-SuperMulti drive (+/-R double layer)

Audio and Picture

Demo Size
17.3" widescreen
Display Type*
HD+ TruBrite® LED Backlit demo
Display Resolution
16:9 aspect ratio, 1600x900, Supports 720p content
Audio
Microphone signaling port with Sleep and Music, Headphone jack (biaural), Built-in microphone, harman/kardon® stereo speakers

Communication

Webcam
Webcam and microphone built into LCD bezel
Wireless LAN*
Wi-Fi® Wireless networking (802.11b/g/n)
Bluetooth
Bluetooth® V3.0 + HS
Modem *
    No Modem port
LAN
    10/100/1000 LAN LAN

Strength

Ac Adapter
    180W (19V x 9.5A) Auto-sensing ,100-240V AC Adapter
Battery
    Li-Ion (47Wh, 8-Cell)
Battery Life *
    Up to 4.18 hours

Expansion

PC Put Slot
    No PC Express Position
Smart Card Reader
    No SmartCard Reader slot
Media
    Memory Card Reader
USB Ports *
    1-USB (3.0) left with USB Sleep and Charge *, 3-USB (20)
HDMI
HDMI output port

truthful any way so i definite to buy this awesome bit! but after reviewing mobile GPU a lot it seems they are barely able to theatre latest games such as (crysis 2 , black ops,battlefield 2,) at radical settings..barely process crysis 2 te high settings e(not radical) fps 30-40 thake which is playable but what heppens when after 1 year crysis 3 comes? xD maybe i will be gettin 15-20fps than :| and not get to see the awesomeness of this legendary game!! :@ .and which volition reduce the true fun of play..but am not a heavy gamer but i same awful art when playing.. so yeah its bothering me to buy the laptop..but the other thing is u can carry it anywhere u want , and chiefly loadsheding proof!! :D but opposite disadvantage is i download a lot and sometimes when i am at sleep.. so i hold to keep the plug in to the battery and which will kill it slowly..so yea.. :(

and the great thing about desktop is beside this ammount of money can buy same spec and even a bit bigger spec's desktop can be bought and perfomance volition be better and future proof ! but desktop aint portable(not soo much important all for ME!) :/ and UPS only givs 30 minute or so backup ..so i am stuck heer! Ohio yeah desktop offers a 21.5 inch 1080p LED monitor which is perfect for me to warch bluray cinema and its 4x times better few 17.3 LCD !! :D

update!!:: this mornin i was checkin both of the nvidia GPUs and see this
its the gtx560m and see fps it gets against recent games
http://www.geforce.com/#/News/articles/introducing-the-geforce-gtx-560m-mobile-gpu

and here is the desktop version of gtx 560 and see the FPS it gets.. almost the same!! WTF!!
http://www.geforce.com/#/Hardware/GPUs/geforce-gtx-560/performance

and here is the big Shocker!! gtx 590 te o not that improvement! come one ultra setting (1920x1080) te crysis 2 e 47!! D: D:
http://www.geforce.com/#/Hardware/GPUs/geforce-gtx-590/performance

thus i am not seein much difference on the mobile gpu vs the desktop gpu and which is the main concern on top of gaming! simply if um wrong at this please enlighten and give ur thoughts about
and btw check this out

this is a laptop with the nvidia gtx560m and playin crysis 2
http://www.youtube.com/watch?v=oBJo4gngUCA&feature=related
and here is the gtx 560 Ti near crysis 2
http://www.youtube.com/watch?v=Ar4Gpro2-6Q
so... what are ur opinions?

LAPTOP or DESKTOP?