I find it a very useful dictionary and would recommend it to those studying Spanish at Intermediate II or above.
It is not as small as those "pocket" dictionaries but at the same time it is not a big tome. It is easy to travel with and is more robust than the smaller dictionaries. I have had mine now for two years and it travels (in my rucksack) with me to Spain and get used fairly regularly at home. Despite this, the fairly firm cover (not hardback) protects it well.
At 9.50 Euros, it is very good value.
Slightly off topic, but a good online Spanish-English, English-Spanish dictionary in Wordreference.com
http://www.wordreference.com/ Robbieroy