Best Computer of the four

[Muffinmurder]

I am looking for a portable, touchscreen computer for under $600. I have narrowed down what I want to these four: Lenovo IdeaPad Flex 14, Lenovo IdeaPad Yoga 11s (refurbished), Microsoft Surface 2 Pro (refurbished), and the Sony Vaio Tap 11 (refurbished). I would like everyone's opinion on which of these is best and why( or if i should absolutely avoid some), or if there are any similar products that anyone would otherwise recommend. I would be highly appreciative if you guys could help me make a decision, thanks.
Flex 14: http/www.amazon.com/Lenovo-Touchscreen-Ultrabook-Computer-i5-4200U/dp/B00F02XU6Y/ref=cm_cr_pr_product_top

Yoga: http/www.amazon.com/gp/product/B00FI1FUKG/ref=olp_product_details?ie=UTF8&me=

Surface: http/www.amazon.com/Microsoft-Surface-Tablet-Dual-Core-Windows/dp/B00MGXZ4TQ/ref=sr_1_8?ie=UTF8&qid=1409890864&sr=8-8&keywords=surface

Vaio: http/www.bestbuy.com/site/sony-geek-squad-certified-refurbished-11-6-2-in-1-touch-screen-laptop-intel-pentium-4gb-memory-128gb-ssd-black/3973006.p?id=1219094926867&skuId=3973006&st=pcmcat309300050015_categoryid$abcat0502000&cp=1&lp=10#tabbed-customerreviews

 

[turkey3_scratch]

I would go with the Flex 14. Let's start with why.

Surface: I think you will find the surface quite annoying to use compared to a laptop. Let's face it, the Surface is a tablet not a laptop. It has 4GB of RAM which is pretty good and actually has a descent processor, but I think the lack of a lot of hard drive space also would be a reason not to get it.

Yoga: This laptop has a much weaker processor of a base clock rate of 1.4Ghz. This is very low in today's standards, too low to be using. This is a no-no.

Vaio: I had a problem with one in the past where the fans made this horrible screeching noise, and I did not like it very much. Not to mention, it is refurbished, and someone had to have gotten rid of it, and for a reason.

The Flex 14 is definitely the best bet, with an i5-processor 1.7-2.7Ghz you will find very helpful. Furthermore, it has 8GB RAM compared to the other two laptops. It also seems to be the newest of all four and is non-tablety.

 

[velo3100]

I would say the flex 14 as well as it has the best processor, max amount of ram and is the best tradeoff between tablets and laptops. I have also heard good reviews of them.