Best Brand of Oil
 

I know I may start a small-scale war here since a lot of times
preferences for brands of oil differ from person to person, but I still
thought I'd get a "vote".

I have a 1990 Honda Prelude that I recently dropped in a JDM B20A. (Had
to replace my B21A1 because it was burning 4 quarts of oil per week)
The B20A has about 50K miles on it, and it's running great. (It's only
burned about 3/4 of a quart in over 2,500 miles, and most of that is
probably my fault since I'm an aggressive driver) The time for an oil
change is drawing near, and although I know the correct weight is 5w-30,
any suggestions on the best brand/type? I've always heard Castrol GTX
is good, but others swear by synthetic. I don't know what brand the
mechanic that installed the engine used, and frankly, I don't care, as
long as I'm using an oil that will prolong the life of this engine. As
far as weather goes, I live in the piedmont of NC, so our average
summertime temperature is upper-80s to lower-90s. (Don't know if that
matters or not, but figured I'd mention it anyway)

One final question: The B20A's horsepower peaks at 5800RPM, so when I'm
shifting, that's usually what I rev it up to. Is this going to hurt the
engine even though the redline is at 6500 and I NEVER rev it that high?

Thanks in advance!

Jon