Hi Robert , I like Matt have refractoritis and have a home built , by me iStar sourced 127mm f8 and it performs so well in all ways I sold a perfect 127mm f7.5 ED triplet APO I had at the time of building the iStar 127mm .
These lens sets are very , very good and the best thing is they have the objective and fully built up scopes in most sizes in stock at great prices , mine took 10 days from Florida USA to Darwin .
My 127's total cost of build including objective ,( iStar) , tube ( IIS classifieds ) , focuser ( Andrews ) , finder and diagonal ( IIS classifieds ) Dovetail and rings ( Bintel ) was only $620 ,
,,,, took a short time to get all the gear together but I had the satisfaction of building this awesome refractor myself and my way ..
Here it is a photo fully loaded , so to speak at 2014's partial solar eclips here in Perth , total cost as seen here $1120 , nice scope .
Also here is an un-touched prime focus moon shot taken with my Sony alpha DSLR at 2000mm using a TV 2x powermate , showing the very well controlled CA this iStar produces at f8 ( 1000mm ) .
Hope this gives you a little inspiration , enjoy .
Brian.