I would say its totally worth it!  I have done my 3rd flight in it today for a total of 12 hours in the 757. The only really bug that bothers me is the engine spool up. The vnav speed or the 250kts under 18000 fixed it self some how. I know everyone was complaining about that. but for me it works now.   Go for it! it can only get better! also it wasnt hard to figure the gsx alignment out for it.