Need advice on choosing between these two or neither one.

Both have 3 owners with good maintenance history, both share M273 v8. Both are relatively impractical. I drive alone 90% of the time anyway.

I live in Texas and have to ship these w/o test drive. I had 2011 E550 for 8 months before it got rear ended and totaled. Loved that car. In that time, air struts went bad (as expected), otherwise felt solid.

Any long-term maintenance concerns with these?

I love the look of CLS, but it feels a little dated, and interior is a bit claustrophobic. Does the B-pillar create a massive blind spot?

Thanks in advance!