There is probably not a better value in any category of scope, be it a reflector, refractor, or SCT. Yes, there is a good amount of chromatic aberation when viewing bright objects. And yes, the CA shows up in One-Shot color images. This is largely attributable to the very fast f/5 optics. But where this scope excels, at least for me, is in narrowband imaging. I have had great success imaging in Ha, Oiii and Sii where CA is not an issue. The large aperture and fast optics are perfectly suited to this kind of work. I find it somewhat amusing that I have a $250 scope on a $3,000 mount using a $5,000 camera to do this narrowband imaging. But it works, and that's what counts. And it's much easier to use than any Newt or SCT considering there are no collimation issues. The only thing I didn't like about the scope was the stock focuser, a problem that was easily solved by purchasing an upgraded Orion focuser with a 10:1 fine focus.
120mm f/5.0 achromat
I'm using this fast achromat for deep sky imaging. I increased the focal length to 750 mm with a 1.5 x barlow and gave a nice image scale to the Dumbell Nebula (M27. The chromatic aberration effects present in achromats could largely be removed in post-processing of the image that I took. The image of M27 I took with this scope is here: http://revans_01420.webs.com/apps/photos/photo?photoid=54917719 Overall I would give this scope 5 stars because of its reasonable price and its potential capabilities. Good deep sky imaging is within reach with this scope, but some post-processing to remove violet halo's etc. will help a lot with an impressive final image.