Another thumbs-up here for the Elite spotter.
The straight eyepiece is a little bit easier to use, i.e. to find your target in the scope, especially if you are new to spotting scopes and their use. The angled eyepiece has several other advantages. It's much easier set up next to your shooting position, allowing you to take a shot, move your head slightly, and look through the scope without shifting the position of your body or gun. In this case the scope is mounted with the eyepiece angled to the side instead of straight up.
Another benefit of the angled eyepiece is the ability to lower the scope several inches. The higher you extend your tripod, the more instability you produce, especially in a high wind. Looking down into the eyepiece lets you keep the scope and tripod lower, and makes a noticeable difference. It also allows two people of different heights to use the scope without constantly adjusting tripod height. You simply swivel the eyepiece up for the taller guy, then around to the side for the shorter. Focus and alignment remain unaffected. Prevents frayed tempers at the range.
John