Spica TC60 kills the 50 in every conceivable way, it should...about double the cost
Avid 8" 2-way
Phil Jones' new AAD 7001 best ever by you won't believe the margin, now in production, bass to 25 Hz (& sounds like it) from one 5" midbass, moderate size, Jones has been raising the minimonitor bar for decades, read below. Anyone desiring a new monitor reference is invited to hear these at the next tradeshow, bring a hankie if minus the approximately $11k ticket price, Phil's probably the only person on earth who knows the secrets inside that box...don't even think about spending anywhere near that amount w/o hearing them!

Yoav Geva's YG Acoustics estimated $30k Anat Reference Main Module (heard only w/ dedicated subs $94k total), almost certainly better than Jones' 7001 but only 50 Hz (no sub: 7001 far better). Yoav's smaller single-midbass version is probably identical w/ only less output.
Boston VR-M50 now in production $700 (beats very good VR-M60 except in low bass & output, P. Jones again)
Vienna Acoustics now in production $1500 Haydn Grand
Totem 1
AE 1 (P. Jones again, every comment read is glowing, listed even now as one of the best monitors ever, released circa mid-'80s, the 1st really good metal cone system, larger AE 2 w/ two midbass bigger sound & more output but probably less focus/transparency, IOW same as Boston VR-M50 vs. VR-M60 above; there's an apparent reason Phil's latest $11k msrp 7001 statement monitor uses a sum total one midbass)
Somebody tell us how the $7k Avalon Mixing Monitor compares to the 7001!