Those are the same buttons and encoders I used for my project and the same supplier. I would totally jump in on this one its only a year too late. If others are thinking of going in on this group buy I would personally recommend the tactile switches I believe the encoders are w/detent so as long as you don't mind that feeling they are great, however you can easily take the apart and remove the detent. http://www.midibox.org/dokuwiki/doku.php?id=encoders essentially these are the tactile switches: http://www.bdis.ca/~briandurocher/public/midibox_errors/parts_mb6582_000004060409.jpg http://www.bdis.ca/~briandurocher/public/midibox_errors/dioioibmb6582june2009.jpg however, I would recommend ordering your LCD screens from mouser too if you have not all ready as part of this bulk order, they have some really nice 20x4 Optrex screens and if you are bringing them into Canada, the less shipping you have too pay and the least amount of brokerage the better.