Buy either, if you can afford it, PKT is currently at a good price, well it was yesterday, it was .105 about 7 or 8 days ago. If you can snap some up for around the .08, it will be happy days in a few weeks time.
RMG - this thing could do anything, that is .005 ( I doubt it though) or $ .05 to .08 before the end of the year. I'm not going to give you my opinion (even though i just did) as there are too many pole schmokers around who think they know everything.
I do know this however, if you buy RMG now, hold until Jan/Feb 2008 as there are some fairly good announcements on the way, apparently leading up to X-Mas 2007.
RMG Price at posting:
0.0¢ Sentiment: Buy Disclosure: Held