You would probably be fine with even a whirly blade grinder but I still like the burr. The Capresso Infinity Burr Grinder I have does a decent job across the board and doesn't break the bank. You can get it at Bed Bath and Beyond for $89.99 and BBB is always sending out 20% off coupons and that is how mine was acquired for around $75 after tax.
http://www.bedbathandbeyond.com/prod...p?SKU=14902422