Buying my 1st new LP in 42 years..Suggestions?

You got 300 LPs including a stack of Sheffields and direct-to-discs and the first thing you want to do is buy another record??? First thing I'd be doing is picking through that stack! Second thing, buying a good ultrasonic record cleaner. Third, zero-stat. Fourth, Stylast or other good stylus cleaner. 

The only way my first move would be to buy a new LP is if the Reference Recording 45 rpm 2-LP set of Doug MacLeod Exactly Like This is not in your stash. If that is the case then please whatever you do drop everything and track it down. Music Direct, Acoustic Sounds and all the usual suspects are already back-ordered, with no telling when they will press more. You might find one on Discogs.com but whatever you do just make sure you find one. If you haven't heard it go look for Serious Doin Woman on YouTube.

See what I mean??

If you like Steely Dan try Donald Fagen “Nightfly” on 180 g vinyl. It truly is an audio file re-release

180g Vinyl is heavier than “regular” records. 2x ?  Not sure. 

“ whatever you want” is not really a helpful response.  Nor is “buy 2”.

The OP asked WHAT to buy. 

What car should I buy? Whatever you want as long as you buy 2. 

Bent

What type of music do you listen to? I have so many to suggest and they are all audiophile quality.

I bought two re-issues of past great albums:  King Crimson - "In the Court of The Crimson King" and Elton John - "Yellow Brick Road".  Both 180 gram weight vinyl records.

Harry Belafonte Live at Carnegie Hall.