I would think the better mount is the best option if you can afford it.
A used tak NJP or MX or AP900 maybe more affordable.
This chap get some great results with an SX AO unit on LX200 12'.
The thing I like about the SX unit is it can be used with non SX cameras.
http://astroanarchy.blogspot.fi/sear...20%28SXV-AO%29