As Matt said, You wont be able to find a good well known brand mechanical keyboard for your budget. I once had this issue from going from a rubber dome keyboard to the one I have now, and despite trying to find the most cheap one I ended up giving up and saving up more money.
Some people however do prefer rubber dome keyboards which come in significantly cheaper. So the question I'd love to ask is, have you tried out both before? Have you tried out different switches before? I do insist you test them yourself rather than reading someone else's review.
I wouldn't buy razer and anyway they're out your budget. (The thought of an all plastic keyboard hurts my head)
Ducky is a pretty good brand and although not to well known, they are made really well! Not too expensive either!
I use the corsair k70 RGB. I use a mix of cherry mx red's and browns as I prefer it this way. But it does come with a rather hefty price tag at £130.
In conclusion, try before you buy!!!! You never know, you might prefer the cheaper keyboards to the more expensive. Also check out ducky! They are pretty amazing for their price, and I can say this from experience, they feel great to use!!
Hope this helps
This link teaches you about all switches, so you'll be able to find the best one top suit you! - http://www.keyboardco.com/blog/index.php/2012/12/an-introduction-to-cherry-mx-mechanical-switches/