My (Baader setup) objective was a little different than yours, which is why I ended up using a more expensive approach (not because I wanted to spend more money, but because I needed to be able to *tune* the back focus).
My objective was to optimize the wide field performance using the Celestron f/6.3 reducer/corrector to obtain the widest field possible in a 1.25" format in that scope, while at the same time using all the correction available from the reducer/corrector at the optimum back focus to deliver the widest possible aberration-free visual field.
Getting to the widest possible field with improved correction is easy. Just use the Celestron reducer/corrector, the standard 1.25" Celestron visual back, the standard Celestron 1.25" star diagonal, and a 32 mm Plossl. Done.
But, wringing out the highest level of performance available from the Celestron reducer/corrector, in conjunction with the C-6 optical train, requires optimizing the back focus distance... And to do that requires something like the Baader T-2 system, so that you can add or subtract spacers until you reach the perfect match between the eyepiece correction, the r/c correction, and the telescope's system... And that may vary somewhat between various sets of accessories, and from scope to scope, as a result of normal manufacturing tolerance variations... So, it was to enable that degree of tuning capability that brought me to incorporate those extra-cost items... And I'm quite happy with the results.
But for many folks, this level of optimization may not be necessary to meet personal needs, and the amount of trial & error experimenting to achieve a higher level of performance may not deliver enough improvement to justify the work to get there, given your personal perspective on the level of performance that's important to YOU... And you are the only person that counts in this equation... I've met my objectives, and I hope what I've shared can help get you pointed closely enough to the right place to let you select what's best for you!!! Enjoy!!!
Edited by Jan Owen, 24 June 2015 - 12:51 PM.