I just purchased Spurgeon's 86 volumes from Logos. While the amount of material is impressive, I am disappointed by the fact that there is no way to search more than 18,000 pages of text on certain topics other than doing a basic search. If you are doing a study on the topic of grace, or the sovereignty of God, you have to type these words into the basic search engine and read a mind boggling number of excerpts from those 18,000 pages before finding usefull material on the topic. Pretty much all of my other books from Logos can be searched by topics. Is anyone else disappointed by this limitation in Spurgeon's collection?