Okay so need feedback

Currently two years in a row diamond with Delta
Premium Exec. with UA

400K life time miles with delta

I find miles redemption with Delta are higher on most routes, times. UA seems better. As a D level some nice touches, but hardly been upgraded due to full flights internationaly, domestic is fine. mostly fly from STL to ATL or DET.

Using system wides on international travel are hard to get, M or higher level, currently UA has lower class of bookings req. How will the CO/UA impact MP benefits (more members = harder to get stuff?)
MQM miles rollover year over year with D is a nice touch.

Most likely i can reach one K with UA by year end.

My thought is drop a bit down to Platinum level w/Delta and try to reach and keep one K with UA.