You won't be disappointed as they are the best that money can buy in my experience. I should add also that the Hastings style is the one I was referring to. They are pretty expensive when compared to others but well worth the money to me. The other ones listed there are good also but not as focused and clear. I bet after you try the Hastings style 10x you won't have any need for your 30x.
The cheapest I've found them online is in the mid $40 range. Radio Shack normally carries them but I don't know what they charge. I get mine through work.
Edit:
I did some digging for a better link and not a bad price. http://www.ottofrei.com/store/product.php?productid=6982
thanks man, ...and i don't sweat price other than when i need to save the cake until i actually HAVE the price, lol, ...i'm a firm believer in 'you get what you pay for' so i never opt for 'cheap' as it too often ends up being way more expensive in the long run, ...i'd much rather pay for quality up front and be done with it!
anyway, thanks again for the links bro, i owe ya one.
peace, and stay safe, SOG