I love rainbows, but I sold off my POM jelly rainbow set, because it was kind of "meh". The colors are really muted and washed out, so it's not that great. However, the POM feels really nice on your fingertips, so that was a plus. But, POM has a kind of slick feeling, that some people don't like, they say it feels "wet". But I like POM, although I never used that Jelly set, so I sold them to a nice person in Canada about 6 months ago. If I still had them, I would've sold them to you.
Oh well, anyway, the takeaway message is that it's always better to be in the game than on the sidelines. So congrats on getting onto the GH super highway and getting off the lurker bus!
My last bit of advice: You don't have to spend a fortune to have a nice keyboard, btw. Spending a lot of money doesn't really help you get a better keyboard, just more keyboards. Which is good too, but not really necessary. However, I would say your minimum investment is going to be about ~ $200-250 to have something really awesome, that you can be proud of. You can do it for less, but it won't look/feel as good.