I use a 14" from harbor frieght, i got it 4 years ago and NEVER have had an issue with it. Its built everything from stick bows, lam bows a ballista, a speed boat and even a 1700# war crossbow.
I have had to replace the switch as the orignial collected dust and would interfer with on/off. nothing major - was a 5.00 repair and about 30 minutes of time.
I don't like the blade changing as i think the tensioner could be better placed, but again 5 minute blade changes and no issues with it. It cuts straight and is all the machine i have needed so far.
No matter what brand you do choose - DO NOT get anything under a 14" floor model. The 9" machines are not enough to take bow building far.
Dave