For someone who has embraced his inner noodle-armness (hey, you don't have to be in mass media to make up words), DX plastic allows me to throw molds and speeds that are way too overstable in premium plastics.
I also embraced my noodle arm, but only with the idea of it being temporary as I continue to improve my form and my arm speed as regularly and quickly as possible. I have found that I can power grip flat discs - about speed 6-7 and up, but I have no ability to power grip putters and mids. Even just holding them, they feel awkward and bulky in my smallish hands - I can not hold them stable and flat with a power grip. So, I dismiss the constant advice to throw only putters and mids - I can't and won't do it. It would make me hate the game I love. That said, I have a few tips for the noodle arm that doesn't want the standard "throw only putters and mids" advice. DX plastic is fine as a beginner, especially if you want to be able to test a lot of discs cheaply. If you have a noodle arm because you are a beginner, and you are making steady gains, eventually you will outgrow most light weight, under stable DX drivers. They will become too flippy, and once you start getting about 250' distance or so, they will get where a hard tree hit from close distance - the kind you are likely to get on a heavily wooded course, can ruin their ability to fly correctly with 1-2 big hits. That is where you will want better plastic. But, the putters and mids are thicker, and don't go as fast, so I think you are unlikely to have that issue with them. Personally, for drivers, I love lighter weight to get more distance, and they require me to have cleaner form than heavy weight stuff, too. Great way to experiment with lots of discs cheap, and bonus, they have the biggest selection and availability of light weight drivers: Innova F2 Friday deals. On Friday, you get the Innova F2 code, buy any 3 discs or more, and get their specific offered F2 premium plastic disc for free. Also, buy 5 or more, get 10% off, and 10 or more, get 20% off. F2 discs, DX plastic, are only $6 brand new to start with! They charge $6 shipping, which is free if you spend $75 or more. Now, that allows you to test a heckuva lot of DX plastic cheap if you want to mess with different discs and weights to see what works for you, and even if you don't like some, or outgrow them quickly, hey, at least they were super cheap! Warning: F2 Friday is highly addictive - make sure you have lots of space to store discs! 5 months playing, and I have over 150 already! But, I play or practice almost daily, so I make regular gains, and I love experimenting with different discs to see what works best for me lately! I compare DGers and our discs to women and their shoes. No matter how many we have, there is another one (or 5) we just have to have! Good luck, and HAVE FUN!