HYBRID lipped magazines

[briang2ad]

Been reading things about hybrid lipped magazines on the web, including here:

http://www.thehighroad.org/showthread.php?t=229073&page=4

and here:

http://how-i-did-it.org/magazines/feeding-time.html

Two things:

1) Is there a "less expensive" place to buy "hybrid" mags?

2) I dug up some old GI mags with a straight gradual taper. I also note that they present the round HIGHER in relation to the chamber than my more modern mags - is this alwasys good?

Thanks.