Currently what's the best lap top on the market?

Best for what exact functional uses and by what cost of use standard?
If there was only one "best", there would be only one brand and model.
The best one is the one that suits your personal needs at a reasonable price point to what you can afford, and also varies by country.
Here are some "best laptops":
http://www.newegg.com/...6834315131
$500 Acer in 1080p with i5-5200U, GT 940M, a TB and 8GB RAM WIndows 10 with more on paper for the money than any laptop in America?

15 inch Macbook Pro Retina configured to over $3000
http://www.apple.com/...acbook-pro
Running an OSX simplicity with a great display and extra long battery life?

An 18.4" MSI GT80S TITAN SLI-072 for over $4600 for incredibly high gaming in a portable unit?
http://www.xoticpc.com/msi-gt80s-titan-sli-072.html
running Intel® Skylake i7-6920HQ and 2 x NVIDIA® GTX 980 [8GB] in SLI

A Razer Blade or 4.1 pound GIGABYTE P34Wv5-SL3K2 to get high end gaming in a smaller lightweight unit?
A Lenovo Thinkpad T450S with 4G communication for durability and business?

There's no "best", and I challenge anyone who says there's. There's a "best" for you, but that takes a discussion of your situation.
Add: Gaming is stated in comment. So, country and price point, and understand that towers are generally much better at gaming than laptops when selected correctly and over about US$500. The best is subjective to what you want to do with your laptop. Computational modeling? Home use? Gaming? Depends what you'll use it for. If it's just word processing or light internet browsing, any laptop for around $400-$500 will work just fine. If you're planning to game on it, MSI makes some good high-quality gaming laptops, but they are a lot more expensive. Guptatech Vargas - Runs for 3500 base model but best gaming computer on the planet. Surface Book. I7, 1 TB SSD. Apple - MacBook Pro is the best laptop in the market and if you want to buy than it depends on your budget.

The best is subjective to what you want to do with your laptop. Computational modeling? Home use? Gaming?

Depends what you'll use it for. If it's just word processing or light internet browsing, any laptop for around $400-$500 will work just fine. If you're planning to game on it, MSI makes some good high-quality gaming laptops, but they are a lot more expensive.

Guptatech Vargas - Runs for 3500 base model but best gaming computer on the planet.

Surface Book. I7, 1 TB SSD.

Apple - MacBook Pro is the best laptop in the market and if you want to buy than it depends on your budget.