想换一架新laptop但又不知道该选哪架，来给下意见吧

如题
以价钱和spec对比的话，哪一家会比较值得呢？
哪一个牌子会比较好？
听说某些牌子的电脑都有一些通病
如果你有更好的介绍欢迎欢迎
(很可能会用到autodesk inventor）

以下是那三架电脑的SPEC

Dell Inspiron 14R
4th Generation Intel® Core™ i7-4500U processor (4M Cache, up to 3.0 GHz)
Windows 8.1 Single Language (64Bit) English
14.0 inch LED Backlit Display with Truelife and HD resolution (1366 x 768)
8GB 2 DIMM (2x4GB) DDR3L 1600Mhz
1TB 5400RPM SATA Hard Drive
NVIDIA® GeForce® GT 750M 2GB DDR5
1Yr Ltd Hardware Warranty, InHome Service after Remote Diagnosis
2.3kg

Asus N550JV
Intel® Core™ i7 4700HQ Processor
Windows 8
Intel® HM86 Express Chipset
4GB DDR3L 1600 MHz SDRAM, DIMM Up to 16 G
15.6" 16:9 HD (1366x768)/IPS FHD (1920x1080) LED Backlight Non-Glare LCD Panel
NVIDIA® GeForce® GT 750M with 2GB/4GB DDR3 VRAM
1TB HDD 5400 RPM
2.6 kg (with 4 cell battery) (with Polymer Battery)
2 Years Warranty

Lenovo Y410p
Intel® Core™ i7-4700MQ (2.4GHz up to 3.4GHz, 6MB L3 Cache)
Windows 8
14" HD WLED
Nvidia GT750M 2GB DDR5
8GB Ram (1x8192)
1TB HDD
2.5kg
2 Years Limited International Warranty Service (IWS)