ttxav.com scored better than 95.90% of 40,000,000+ domain names in the Domomark database.
ttxav.com is a 5 character word. It is a excellent domain length for people to type quickly.
Top Level Domain
ttxav.com is the best TLD due to approximately 60% of top 300,000 sites uses '.com'. People are more habitually to type .com than other TLD.
ttxav is neither a dictionary word, nor does it contain any dictionary word. People tend to remember dictionary words faster than not dictionary words. However, dictionary words are not required.
Distinctivity is the most important factor of all. The domain name ttxav.com has a poor distinctivity factor. ttxav.com looks like a tough to remember, or type, or pronounce domain name. Probably not a good choice.