Responses from solypsa

SPL Phonos Phono Preamp
Pro gear usually has a 'list' price that is almost never charged and a MAP price that becomes the standard. 
phono pre-amp being replaced
I love a *well implemented* SUT too. I use Silvercore most often.If you want to try a new phono pre on the scene just pm me and I will send you a demo 'Audiospecials Phonolab' to try no cost no obligation. Its in your price range and is two preamp... 
Mono Reissues and the Conical Stylus
I am a dealer for both Schick and the GMII so i have some bias but both are great values imho. 
Mono Reissues and the Conical Stylus
Goofyfoot: I get it :)As an aside; the Schick arm actually isn't extremely high in effective mass and can be pretty great with many modern carts (lyra comes to mind). The GMII is higher in effective mass so more focused to the very low compliance ... 
Mono Reissues and the Conical Stylus
I totally get it if the GMII (or a Schick) are out of budget.I will say that the role of the tonearm should not be under estimated. Both in terms of its quality and how well it works with the cartridge.  
Mono Reissues and the Conical Stylus
+1 on lewm's comment: if you want to play 'everything' you'll need a few different mono carts. (Archivists often have considerably more)That said 'modern' monos will sound better with a modern stylii profile for many of the same reasons stereo rec... 
Turntable leveling
If it looks good with a 'good' spirit level then you are fine.Quality off spirit levels varies a lot. But i'm not talking $1000 calibrated levels used by CNC mechanics. Just not a cheap plastic one... 
Help? Problem With Holding The Groove On A Hot Pressing
Mastering process cannot correlate to a variety of pressings from different 'houses'. Groove geometry can and relates to setup alignment.  
Tonearm suggestions for my Nottingham Analogue Spacedeck
You can try it out. Free unless you keep it :) 
Tonearm suggestions for my Nottingham Analogue Spacedeck
+1 on a Schick; especially if you plan to stay with medium compliance carts going forward.Similar price range and also superb is the Audiocreative GMII titanium. This one is a great choice if you plan to try heavy/low compliance cart directions...... 
Need RCA loading plugs
@imhififan made a great suggestion with that uber cheap rca with screw terminals....if only to experiment with!Buy that and the resistors. (Or if you want to dive deeper into the rabbit hole several different types/brands of resistors. Experiment ... 
Should I upgrade my phono pre??
Look into Silvercore SUT and Emia SUT too... 
Should I upgrade my phono pre??
I forgot to clarify: you can try the Phonolab in your home....Have fun in your analog adventure! 
Should I upgrade my phono pre??
I've got an AS Phonolab 1.0 available to demo if you like. Since its a commercial interest for me I'll refrain from subjective commentary and just say 'you could hear it and make your own mind'. It's in your stated price range. ....if solid state ... 
best Front end for B&W 801 Matrix 3?
Any comments on how the system sounds to you with said 'weak tt'?