Did our house about 10 years back. Used
Log Siding and Log Cabin Siding - The Woodworkers Shoppe We chose the 3X6 half log. Its tongue and groove top and bpottom but also on the ends like flooring. No need for the piece to stop on a stud. Just put up your first piece and keep clicking them together till the end. Cut and use your cut piece to start your next row. Pretty much zero waste. Highly recommend them