RP-Delay is a monster.
https://www.robpapen.com/rp-delay.html
Massive bang for buck for what you pay. Loads of intricate presets. Doesn't get enough love for the sheer beast it is in the delay world.
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Nomad Factory Echoes.
https://go.nomadfactory.com/products/p803-Echoes/
So quick to dial in. So 'old-school' sounding. You can get this cheaper by buying second-hand or getting a Nomad Factory Bundle. Come to think of it I've got a spare license now I just bought a Nomad Factory Bundle.
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Tal-Dub-X.
https://tal-software.com/products/tal-dub-x
Very reasonably priced. Another beast of a delay especially if you like to dial in Dub delay. Yeah, 'dub' is in the name, but it's actually pretty good for that style too. Paid about 15 bucks for mine. Free updates. Lovely.
Also get all the free ones they do because they are superb as well.
https://tal-software.com/products/tal-dub
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D16 Tekturon.
https://d16.pl/tekturon
One of my absolute faves. Just an absolute joy to use. Easy. Quick. Sounds stellar. Can pick up fairly cheap second-hand or on sales by D16. Worth every penny and more though at the normal price. I've got other delays by them but this is easiest to use by far.
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u-he Colour Copy.
https://u-he.com/products/colourcopy/
A particular flavour. It does it well. Check out the skins by Ploki.
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PSP 608.
https://www.pspaudioware.com/products/psp-608md
An exceptional sounding delay that adds real world recording shine to your bus when you stick it on. It's magical. It's other-worldly. Perhaps the best sounding delay ever created. It's old now but worth every cent. I've got the other PSP delays (except for the latest as I have parted ways with PSP due to their copy protection). I could have mentioned them too. I just feel this one has a certain 'I don't know what'.
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Boz Imperial Delay.
https://www.bozdigitallabs.com/product/imperial-delay/
For those annoying times when Elton John's producer wakes you up in the morning. Accept no substitutes. Used to cost 200 bucks now you can get it for 20 quid at plugin boutique.
https://www.pluginboutique.com/produ...Imperial-Delay
Has a sneaky little Drive/Saturation knob that is absolutely to die for when driving a 303 like instrument like D16 Phoscyon.
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Waves H-Delay.
https://www.waves.com/plugins/h-dela...sic-production
Sounds great. Dials in quick. Doesn't cost too much (initially). Lot of fun.
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Objeq Delay.
Grab it cheap at plugin boutique -
https://www.pluginboutique.com/produ...1-Objeq-Delay-
About 8 quid right now. Great sounding whilst bringing something different to the table compared to what all your other delays do.
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Hornet Deelay.
https://www.hornetplugins.com/plugins/hornet-deelay/
If money is tight they have this going for 2 euros right now on a sale. It's a handy little unit. Easy. Does the job.
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Voxengo Tempo Delay.
https://www.voxengo.com/product/tempodelay/
If 2 euros is breaking the bank for you right now, this one is free. It's got that typical Voxengo quality to it. A seriously powerful delay plugin that will do the majority of what all the other plugins I've mentioned will do, but for no money at all. It's probably missing some tricks. But I doubt anyone could argue this is the best 'bang for buck' of them all.
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I've got a shed load more delays. I've got every single Valhalla plugin bar one. Yes, I've got Delay and it's as superb as everyone says it is. Check out Freq Echo as that is free and very good too. A little Uber Mod goes a long way.
Just tried to mention a few of the oft forgotten ones. Though I'm sure I forgot a few myself right now.