Let's see 'em all together.

20130913_163558 by Slick_Rick77, on Flickr

I don't have anything high end but I consider them all the best available at the time for the money. They all rate high for bang for buck. All of them except for the RWS have been around for a couple decades or so.

Image link updated 9/24

I don't think I have a pic with several of my airguns in it, but I probably have some pics that you don't see everyday......and I need to learn how to post pics on this site. I've lurked for years, but I think this is my first or 2nd post.

The top one is a John Bowkett 9mm muzzle-loader. Note the barrel is under the air tube. It makes about 120 FPE IIRC and is pretty quiet
without a silencer just because the barrel is long enough to extract most of the work from the air.
http://i248.photobucket.com/albums/gg175/rickpetersonms/Bowketts/Muzzle-LoderRight.jpg

Here's a Career 707 .22 . They make about 60 FPE with solid .22 bullets. I "stripped" about a hundred airguns and photographed them to learn how they worked.
http://i248.photobucket.com/albums/gg175/rickpetersonms/Career707%20Strip/Career707Strip015.jpg

Here is one that I built. I call it the BazookAIR .457. It holds 550CC of air. Part in the front of the action and part in the butt stock. There is a hollow rod running through the action that connects the front and rear chambers. It makes 250 FPE with 200G
bullets for 8 or 9 very even shots. The air gauge and fill-nipple are in the but pad. The breech holds 3 bullets stacked in-line and the air enters between the first and 2nd bullet. Then the bolt is pushed forward to index the 2nd and later, the 3rd bullet.
The trigger mechanism has a disconnector because I planned to build a semi-auto eventually. Lots of innovative features in a very ugly gun :) I pretty much lost interest in airguns after moving out of K'alifornia and becoming an 07 SOT in Idaho.  
http://i248.photobucket.com/albums/gg175/rickpetersonms/BazookAir%20457/DSCN9782.jpg

I never got around to building the UNDER-BUSS. It is a muzzle-loader with the barrel under the airtube like the Bowkett. (For looks and for less muzzle-rise)
http://i248.photobucket.com/albums/gg175/rickpetersonms/UnderBUSS%20muzzle-loader/UnderBUSSRightFront4-21-10.jpg

Here's a little QB BullPup with the stock off to show the improvized trigger mechanism:
http://i248.photobucket.com/albums/gg175/rickpetersonms/Bullpups/QB78Bullpup009.jpg

Here's a Harper Classic Wolf. It is a PCP fired by a selenoid. The Harper patents have been used by Daystate in the MK3, etc.
http://i248.photobucket.com/albums/gg175/rickpetersonms/Harper%20Classic%20Wolf/HarperClassicWolf002.jpg

Impressive.  Very nice work.