let's be clear: if a name is with hostname/dotster/fasthosts/etc it's a recent handreg, no exceptions.
handregs rarely sell in their first year.
so if you are a long term holder targeting end-users you will have to transfer away to a normal registrar in a year or less.
which is time consuming and can be PITA as we all know.
at the same time there is no shortage in handregs for sale residing at good registrars where fast & free push is all you need to do to get a name into your acc, no hassle, no problems, no risks..
..and the quality of a handreg does not depend on a registrar. obviously.
difference in prices - yes, dotster & co names are usually cheaper to buy because they regged with promo codes so for a registrant they cost $5-8 less than GD/Namesilo/etc:
if as a buyer you pay $10-20 for a handreg name at GD, the same at Dotster would cost you $5-10
you save $5-10...
but for long term investors if you hold a name for 5-10 years your total cost of ownership for hadregs consists primarily of renewals: 5-10 years x $9 = $45-90
so $5-10 you are saving on Dotster & co names don't really matter much
especially when your Sedo/Afternic BINs are $1,000-10,000
( if they are lower your investment model is questionable, at best )
that's why i won't even bother looking through lists if i see something like nettigritty etc as a registrar...
i would buy $20 name at GD instead
and i'm sure that many buyers here feel & act just the same...
imho