The best solution I have found is the Elephant Earwash http://www.medicalmailorder.com/browseproducts/Elephant-Ear-Wash-System.HTML It has a soft flexible tip that can go deep into the ear, the pump is efficient, and it works better than the old stainless steel ear syringes. Highly recommended.
This is what we use and it is so efficient and professional appearing. Pricey but it pays for itself in less than a week depending on how many irrigations/disimpaction you do a day or week.
http://www.macgill.com/productDetail.aspx?catId=6&subcatId=67&product=29300