Arm Upgrade Suggestion?


I am running an SME 3012/2 with a Lyra Delos. Happy but want to be happier. Table is a rebuilt Thorens TD124 and phono pre is Herron VTPH-2. 

Any suggestions what would be the next step up? I like a 12" arm, but really for aesthetic reasons :)
dhcod
0.---you have already reached it's limit with SME3012
So...
1.---swap the Delos --- for a London Reference
2.---sell the complete package --- for:
 
a). 
DP75/DA402/ART9 http://www.ebay.com/itm/DENON-record-player-system-DP-75M-DA-402-Free-Shipping-JUNK-Item-/2823031232...

http://www.ebay.com/itm/Audio-Technica-AT-ART9-0-5mV-High-Output-Dual-MC-Stereo-Cartridge-Japan-Made...

b).
DP80/DA308/ART2000 http://www.ebay.com/itm/DENON-DA-308-12-INCH-POLLICI-TONEARM-DYNAMIC-/272470793885?hash=item3f70865e...

http://www.ebay.com/itm/Audio-Technica-ART-2000-Rare-Limited-Edition-Reference-MC-Cartridge-/3320641...

c).
PL-70LII http://www.ebay.com/itm/PIONEER-PL-70L-Turntables-Record-Player-F-S-/262519118389?hash=item3d1f5bda3...

d).
PL-70PLL/ISOKINETIK  http://www.ebay.com/itm/Pioneer-Exclusive-PL-70-PLL-direct-driver-turntable-unit-for-pro-VG-cond-/29...

http://www.ebay.com/itm/ISOKINETIK-SILVER-MELODY-SILVER-WIRED-TONEARM-Hi-FI-CHOICE-5-STAR-RECOMMENDE...

Please Remember:
The TD124 does not accept modern perspectives on arm & cart.
It can not resemble a modern sound whatever your efforts.
All the hi-tech arms & carts can easily play better on many other TTs of much lower quality than your TD124.
At best, you may approach an acceptable outcome, but at the expense of the vintage glory.

All the best