Is it better to buy Nikon 18-200mm and Nikon 70-300mm or just Nikon 28-300mm?

Nikon 18-200mm + Nikon 70-300mm is a bit cheaper than 28-300 alone but i would say that the first option is better, what do you think? I'm using nikon d7000

Added (1). Lol i know which one is for and there spec that's why i narrowed down my choice to just these 3 but i'm asking if anybody used 28-300 so he could tell me about the quality and how it compares to this combo

Added (2). Listen i wanted to buy 18-70mm lens along with 70-300mm lens so i i will have a range from 18-300mm in 2 lens better than just one in terms of quality, but i've read the review about 18-70mm and found out that 18-200mm is better (image quality) and that they are about the same price so i decided to buy 18-200 instead of 18-70 so i'm just asking if 18-300 mm range in 2 lens package is better than 28-300mm
in just 1 lens i know that when covering those big ranges it is better to have 2 lens covering them rather than just 1 but i'm interested for the quality of 28-300mm

The 18-200 mm is one of those single lens solutions that work great. I use mine when shooting editorial and motocross events.

The 70-300 mm is fine for shooting air shows and field sports, but has no wide angle coverage.

The 28-300 mm is just like the 18-200 mm but for FX (full frame) cameras like the D3 or D700.

I think you need to visit a proper camera store and try out each lens and see which fits your needs the best.

The Nikon 18-200 is known more or less as a "walk around lens", in that it a single lens solution for most shooting situations.

I have this lens, and I consider it my "vacation lens". Having nearly a 12x power, this lens is technically a "super-zoom", and like all super-zooms, it has some optical quality issues. My lens is a bit soft (blurry) at any aperture larger than f/8, but when used at f/8, it performs about as well as some of my other lenses.

I call it my vacation lens as I'm willing to use it at f/8 in order to simply have one lens - resulting in a lighter package to take on vacations. Although using it at f/8 is really only good in daylight conditions, most of the time on vacation, I'm taking photos outside anyway, so it is not really an issue.

When I'm at home, I have better lenses, and I will usually use one of those.

The 18-200, as a DX lens, gives a pretty decent coverage from the wide angle to telephoto end.

The 28-300mm lens is more-or-less the FX (full frame equivalent) to the 18-200. While some DX users have the 28-300mm lens, Nikon really intended it to be the FX version of the 18-200.

The 70-300mm lens is a telephoto only lens, and is best used along with your kit lens to get the 18-300mm range. However, this results in a 2 lens solution, and by definition - it is not a walk-around lens.

Again, the 18-200 and 28-300 lenses are somewhat specialized lenses, and with the optical issues, they are best used at f/8 and smaller. At those apertures, they give adequate performance, so they should also be considered daylight-only lenses.

Here is a webpage where I compare my 18-200mm lens so my son's 18-55mm and 55mm-200mm lenses.

http://www.althephoto.com/lenses/super-zooms.php