I think the Sabian B-8's are very good for the money,and sound good out front when playing med to loud volume levels.
I agree about the rides and hats,I have played some exceptionally good B-8 hats,and the rides are usually always good with some being really nice.
The crashes sound good out front,but are a little harsh near field to my ears,but that is probably what helps them cut through so well.The crashes take a little getting used to for me,they seem to be a little stiff,even the thin ones,so I have to give them a pretty good whack to get them going,and I find that I have to use a 5-B minimum to control them.On the plus side,if you can get them to respond and open up when playing them lightly you should be able to really smoke on more responsive cymbals.
When I started playing years ago your only choices were pretty much pro line Zil's or Paistes,which were really expensive,or brass or bad sounding b-8 alloy trash can lids.Every once in awhile you may find a good sounding Ludwig standard or a super Zyn,but both were pretty scarce.
I think that Sabian B-8's are a great alternative for drummers who can't or don't want to pay the money for the more expensive pro lines.