I like eye appeal just as much as John and JimB, but would add that a complete Monster is more frequently sold at Napa Auto Parts than in a Lamborghini show room. Therefore although uniformity presents nicely, I enjoy having many nice cards in my set and don't mind having a few stragglers as well. Like Wonka and others, I am continually upgrading at this point (at the 518 plateau) to improve the overall appeal of my set, but I do not foresee selling my EXMT examples for the sake of uniformity. Regardless of the condition level you select, if you shop patiently, you shouldn't lose. My set covers the condition gamut from Poor- to NM+, averaging VG+ currently. The advantage of having 518 VG+ cards matters not to me. My Cobbs are EX+, VGEX+, Fair and Authentic. I like them all and all will ultimately sell for more than I paid for them (but perhaps over my dead body
).