Chrystal,
I tried both and went with the Eurolight. I don't remember the Trailmaster having a harder seat, but I was more focused on which rubbed me where. At this point, I can't remember what I didn't like about the Trailmaster. I really like the Eurolight seat, but as mentioned, you have to try them both for yourself.
I generally prefer a hard seat if it fits me. That being said, the Eurolight is pretty cushy, although not excessively so. A hard seat that doesn't
fit is miserable, but it at least you know it quickly. A cushy seat
can hide the fact that the seat doesn't fit and lead you to believe it does until you have
ridden it for a few hours. Nothing is better than finding out your saddle hurts 4 hrs into an 12 hr day. If the seat doesn't feel ABSOLUTELY PERFECT over
the course of the average test ride, move on to another saddle.
I would suspect that the Eurolight will feel less secure to you because of the endurance seat. If you are concerned about security, you should try the International. It has a deeper seat and thigh blocks and is much more secure than either the Trailmaster or the Eurolight IMO.
If you decide to go with a Specialized saddle, DO NOT buy directly from Specialized. There is a list of distributors on the Specialized site. Find
the one closest to you and purchase through them. I used Ms Shelby
Friml of Double Diamond Equine in Starr, NC. I cannot say enough good
things about her. I contacted Specialized directly
regarding a couple of concerns and was very underwhelmed with the company's customer service. Shelby kept things moving when the process was trying to stall.
Regarding my Eurolight, it is the most comfortable saddle I have ridden. I thought about getting a completely custom saddle, but a saddle that is
specific to one horse at one point in its life doesn't fit my needs.
The shim system works as advertised and I've gotten pretty good at
fitting it to my horse as she changes. I got the dark oil finish and am glad I paid extra for it. The core construction is very solid, the leather is awesome and the finish is beautiful.
When you first get your saddle, make absolutely sure everything is exactly how you want it. While the core construction is good, the attention to detail putting the final saddle together was lacking. They made everything right eventually, but it was a slow and frustrating process. Since they did right by me in the end, I would buy another saddle from them and I'll recommend the saddle, however only with the aforementioned caveats.
Nate