I own about 4500 LP's mostly rock and jazz, but some classical as well.
I have a record cleaning machine where I use liquid enzymes to completely cover the grooves, scrub them, then the machine vacuums all the dirt and liquid away.
The LP's come out perfectly with almost no pops and ticks.
I buy lots of used vinyl, so cleaning is absolutely necessary.
A clean LP also doesn't wear out, since the dust can act like sandpaper and wear down the grooves.
My turntable, arm and cartridge costs (retail - not what I paid) well over $15,000 US
When I play an LP with a decent recording it sounds truly live, or like you are listening to the master tape.
I have some very good quality digital playback gear (separate D/A), but the sound quality isn't even close to good old LP's.
I wish everyone could hear what LP's truly sound like, when cleaned and played back properly. A good turntable doesn't need to cost what I have spent, but don't expect a $200 technics to allow you to hear all the information actually contained in the groove. I have read interviews with mastering engineers, who have said properly made LP's can sound almost identical to the master tape, and another who stated that direct to disc LP's (where there is no audio tape involved) sound better than a master tape. Meaning the LP groove sounds better than a professional master tape deck, at least in his opinion.
Digital recording can sound better on vinyl as well, since the high resolution master tape is used to make the LP, while the CD is downconverted to a much lower sample rate.
Here in North America there is a resurgence in anologue disk media "Vinyl". Seems to me that if you own a turntable, you're considered cool!
My stereo system is kinda weird: A mixture of high-end Analogue and Digital source gear, running through tube (triode/pentode valves) pre-amp and power amp. My analogue source is a Thorens turntable.
Reason for this weird mixture is that all my acid rock / dinosaur rock is on vinyl, and my Jazz collection is on digital...