Sony PMW-F3 with FZ Power Zoom Lens SCL-Z18X140 On Ebay
Price: $5,000.00
https://www.ebay.com/itm/Sony-PMW-F3-with-FZ-Power-Zoom-Lens-SCL-Z18X140/402531277833?

Using EF lenses on RF mount + drop in ND adaptor (so not looking at the awesome and expensive RF 24-70). Replacing ageing Tamron 24-70 VC for something with smoother AF - the focussing can be jumpy and jarring. Looking for decent in-lens stabilisation.
Was originally thinking the Tamron G2 but the stabilisation looks sticky for panning. Thoughts / experiences? Anyone using the Sigma 24-70 Art on Canon and can comment on the stabilisation -is it sticky, is it jerky? Mixed reports on internet, some say it’s not effective at all, some say it’s better than the Tamron. Limited footage out there - what I’ve seen looks ok...
Will probably rent both the Sigma and Tamron to test, but would be grateful for long term opinions going into this upgrade. Will likely be my workhorse lens for years to come. Cheers. 
Paul

Sony PMW-F3 HD EXCAM Camcorder, Super 35 Sensor, 444 Log Upgrade Complete On Ebay
Price: $997.00
https://www.ebay.com/itm/Sony-PMW-F3-HD-EXCAM-Camcorder-Super-35-Sensor-444-Log-Upgrade-Complete/224051253529?

Sony PMW-F3 HD EXCAM Camcorder, Super 35 Sensor, 444 Log Upgrade On Ebay
Price: $847.00
https://www.ebay.com/itm/Sony-PMW-F3-HD-EXCAM-Camcorder-Super-35-Sensor-444-Log-Upgrade/224046896591?

Sony PMW-F3 Full HD XDCAM SxS Camcorder w/ SCL-18x140 FZ Lens On Ebay
Price: $2,500.00
https://www.ebay.com/itm/Sony-PMW-F3-Full-HD-XDCAM-SxS-Camcorder-w-SCL-18x140-FZ-Lens-60-day-Warranty/274293032174?