CRS v5 po gamit ko, stable naman po sya. pero sabi sakin ni sir nico (un developer ng software timer nato) meron sya new version, dami daw features na bago & free na support. donation lng naman daw ok na for a good timer like this. nagp-plan na rin ako mag-upgrade this next month. here is sir nico's ym ---> rdgsalocin
try to contact him directly nlng :)