I'm a tube novice: Tube substitution?

Yo guys- I need advice from you tube heads out there please :)

My Exemplar 2900 CD Player currently employs a pair of Mullard SQ 282 E180CC/7062 tubes, which I dearly love. Having perused these pages daily however, I know these particular tubes are quite rare and not easily found.

I know I can substitute 12AV7's without issue, but what about others? I realize that every tube family has varying degrees of desired quality, but my confusion concerns what actual tube numbers are physically compatible with the player.

For instance,I came across a sweet looking pair of E182CC Siemens- brand new- that I'm curious about...would they be adequate substitutes?

Any advice you guys can share would be invaluable!

Thanks,

Dan