UO Prism for MK-67?

I've read through some previous posts about prism vs mirror digonals, but I'm going to ask again for my specific situation. I need a 1.25 diagonal for my six inch Intes(Orion) maksutov (f12)and my 8 inch Meade SCT (f10). I am considering either a University Optics 1.25 regular prism diagonal ($42) or the Intes mirror ($100). Since these are slower scopes would the prism be a good choice? I like the thought of being able to clean the prism diagonal more often than the mirror. Are the UO prisms significantly better than the stock cheapos that come with most scopes? Misc question: I'm not considering the 'correct-image' prism, but does the regular prism have the same number of elements as the 'correct-image' diagaonal. Any advice or insight along these lines would be appreciated.

Also, the high-end diagonals ($150+) are out of the question so I really don't care how much better they are. Also... two inch diagonals are out of the question becuase I already have one and the Intes won't focus 1.25 EP's with it and I'm trying to keep the weight balanced on the SCT.

If the UO prism diagonals are still made in Japan, I'd say yes, they are significantly better than the stock cheapos. A 'correct-image' prism is still just one hunk of glass, but it has more facets than the standard right-angle.

I think the standard prism should work fine. There are things to worry about with cheap mirror diagonals, too, e.g. collimation is frequently a problem with any mirror diagonal that is plastic or cast metal. If you bother to deal with such problems in an inexpensive diagonal, those high-end diagonals made of machined aluminum can start looking more and more like bargains.
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Mike