I've used Arista EDU 400 several times quite satisfactorily. As AJG mentioned, developing and printing/scanning your films is a great way to not only reduce costs but also to have complete control over the process and be able to adjust many factors.
Spotmatics are plentiful on Ebay, with and without lenses. Just do a search every couple of days to find one in good condition at an acceptable price. If you already have a Takumar lens, all the better.