Quote:
Originally Posted by Matty P
d The two scopes I have been looking at are the Tak Sky90 and the TMB92ss. d
Thanks. 
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I would have to agree with Dennis with regard to Takahashi accessories being mainly proprietary and very expensive,although typically good Takahashi quality.As well as being hard to get.And while you may think that you wont need any adaptors,you will probably find you will need a flattener and maybe spacers.As far as TMB is concerned,the older TMB scopes with LOMO or LZOS Russian optics are superb quality,with a great reputation,and available second hand on Astromart,mainly in the U.S.Some of the newer TMB scopes are now sold with optics listed as Thomas Back designed,with the optics actually reportedly made in China,to TMB specs.Quality control is still being debated in various circles.
William Optics scopes are in the same basket regarding quality control.Some are quite OK,and some are below par.But I guess it comes down to what you want and are willing to accept.
I think that the Stellarvue APO's are the best value for money at the moment,and have spent many months researching and reading everything I could find.You can find Stellarvue SV80S and SV80L's on Astromart for under $1000U.S. in as new condition,these are fitted with Russian LZOS optics and are widely regarded as 2 of the finest 80mm refractors made.
I currently own a Stellarvue SV105 LZOS and can vouch for the quality of the optics as well as the overall build quality of the tube and accessories,and they come fitted with a Feathertouch fucuser,which is superb.Where you will notice the difference between a High end Apo and mid rage Apos and Doublet "semi Apos" is in the contrast and better colour correction.
Wayne