I like them. Have run on apps from my race car to my motor home.

Besides the shavings etc.. they are decent.

Important to know that BG carbs flow a little more than a holley with the same number.
Also, that the different series of them(road, speed, mighty, race, etc) are set up to respond to different camshaft durations.

I have seen lot's of posts on here in the past where there have been size and series mismatch. The results are not good.

ie... I remember a guy with a 383 with a pretty agressive cam. around 250 @ 50 duration.

He was running an 850 speed demon on it, and couldn't get it to idle.

In that situation, a 750 mighty demon would have been the correct carb. The 850 is too big, and the speed series is for smaller cam's so tuning it right was virtually impossible.

Don't buy the wrong series of carb, no matter how good of a deal it is, UNLESS going the otherway(running a mighty, where you should be using a speed)

IIRC the series are broken down like this.
Road demon-stock replacement, speed demon- up to 240 @ 50 duration, mighty demon 240- 260 @ 50, race demon - above that.