Family Tree DNA’s autosomal DNA test Family Finder ($99) is also a good option. For Y-STR and mtDNA testing, FTDNA is the only company that I currently recommend. I generally recommend testing, at least, 37 markers for Y-DNA and the full sequence for mtDNA*. If finances are an issue, then start with one of the lower resolution tests, like HVR1&2 mtDNA* test, and upgrade at a later time. Family Tree DNA guarantees storage of the DNA, so testing any elderly relatives at FTDNA is strongly recommended.
*Mitochondrial DNA (mtDNA) testing is usually not genealogically informative, so I recommend that women, instead, start with autosomal DNA testing and men test either their Y-DNA or autosomal DNA (or both).