I have shot many high end guns in my career and after each one I try I keep going back to my E-mag. I have shot and/or owned Vision Impulses, Timmys, Angels, Autococker (electro and manual), Bushies, and mech 'mags. My favorite so far has been my E-mag. I play tourney ball and some of the characteristics I look for in a gun are different than what others look for. While it is not as flashy as most other high end markers (the intro. of the X-mag and ULE bodies makes them look as good as they perform) it has many of the strengths I look for in a gun:
-Soft of Paint: The advent of the Level 10 is one reason I began liking my E-mag so much. I play back and this is one of the most important factors to me. Every second I am not shooting I am letting the other team bear down on my front players. As long as I am up shooting I keep them down for my teammates to advance.
-Reliability: I have been using my E-mag in tournaments for about a year and a half now and it has never let me down during a game. In the rare occasions where I am running, sliding or diving it has held up beautifully. The only unexpected maintenance it has seen was a slight tweaking of the Level 10 after about 6 months. This caused a slight leak down the barrel but the gun still shot. A 5 min part swap remedied the problem.
-Speed: This is also a big factor to me. While not the most important thing I look for it is very important nonetheless. The 3 way adjustable trigger makes for a very light and crisp pull. The blade trigger added a good 3-4 bps to my ROF and I would make it a highly recommended upgrade to your gun. I can keep up or exceed the Timmys, Angels, and Impulses out on the field.
-Accuracy: My E-mag has been one of the most accurate and consistent guns I have owned. With a little knowledge and some slight upkeep you can keep your mag shooting very flat over the chrono. I have gone strings of +/- 1 with a good paint & barrel match. The 1oz Lvl 10 Superbolt makes the gun have very little kick so the gun stays still when shooting long strings of paint. When I bought my Impulse after using my mag for so long I was amazed at the difference in the way the two shot. Sweetspotting became much more difficult when using my Impy than my E-mag.
-Low Profile: The more guns I shoot the more important this has become for me. Even playing back on the small 5 man fields snap shooting is a very important skill. The sleek design of the E-mag makes sight acquisition very fast and easy.
Warranty: I have had good experience with Airguns Designs when it comes to Warranty work. While I have never had to send my E-mag in for repairs or maintenance I have dealt with them with some of the Mechanical mags I had owned in the past.
If you are looking for the same characteristics as I am when it comes to choosing a gun I would definitely recommend the E-mag as the high end gun of choice. It does not have some of the "hype" that other high end guns have but it is a very solid choice in today's crowded market. I was slightly wary when I first purchased my E-mag but it has made me a true believer in this great marker.