I didn't know people sued any Marshall brand pedals apart from the original black bluesbreakers and gov'nors. In fact, I didn't know Marshall was still making pedals apart from its 3 main dirt boxes until you posted this... TC makes a great product and their algorithms really hang in with some of my old favorites from Lexicon etc... I have felt I got my money's worth outta everything I ever bought from TC and that's a lot of stuff at this point. marshallc an't even design a decent sounding, reliable amp anymore. Their heyday ended with the JCM900 series and the nails were put in teh coffin by those JCM2000s. Trust the effects company for your effects needs. TC's reputation is built on their analog flanger, great digital effects, crystal clear sonics, dry through, good buffers, excellent MIDI implementation and... well, you get the idea. Marshall's reputation is built on the plexis, JMPs and 800s. Amps. Old amps, classic amps, reissued amps that kep the company afloat.... I gotta say their couple popular dirtboxes are just okay stock. If you had told me the bluesbreaker would eb acollectible back when it came out I woudla laughed at you. But go figure, people are nutty.
I feel like there are 2 categories of reverb, especially when it coems to guitar. I will call them acoustic simualtions whichs trive for reality and then the other I'm calling effecty reverb. Tiled room, chamber, hall, cathedral, cavern? simulations thata re really meant for the mixing desk when you're dealing with really dry sources... spring, plate, blackhole, shimmer? special effects and their own thing. Most reverb pedals will be simualting real spaces and the tamer effecty reverbs (spring and plate).... but you don't hear a real space into an ampa dn through a 12" midrange driver, do you? There's already a space surrounding your amp (unless you're outside playing a festoval. So its starting to sound kinda weird to put a hall reverb simualtion into your amp when your amp is already in a hall.
consider this though, running reverb with a guitar amp is generally coolest when its an unnatural effect like spring reverb or soem of the more ethereal stuff you can do with eventide stuff... as a soundman I gotta say that guys who put a ton of hall reverb or small room stuff into the front end or FX loops of their amps can be annoying to deal with in the FOH mix in anything elss than HUGE venues. The space is reverberating or if tis packed with bodies and is absorbing sound I amy really wanna use whatever's on my aux sends for vocal treatment to get the whole thing sounding right, but here's this guy with a cathedral alroghrythm into an amp and its got a little overdrive on it (he thinks its clean but 20 feet back Ic an ehar the harmonics popping and the amp compressing the verb making the decay and stuff all weird because tobe amps do that once theya re loud enough to sound good) and its throwing everything off and wasting space ebcause he isn't set up to control the decay with a gate or expander like I am on ym aux bus! And as good as that hall of fame sounds, the reverb makes his sound allw ashy and the guy in teh band afterwards with a little delay into his marshall sounds way better and is still spacious as does the guy in teh third band rocking the fender super reverb has a ebtter sound too because the reverb is a part of teh whole design and really integrated not to mention being a classic sound reference for everyone who ahs ehard a surfe record or watched a sergio leone movie!
So to sum up a bit I recommend spring for certain 60s style sounds (and the hall of fame si good at this but so is the holy grail and a bunch of lesser known gadgets like the malekko spring chicken), subtle delay for most other ambiance duties and for the really crazy special effects go ewith stuff like the eventide space pedal, digitech hardwire or the new EQD Transmisser (which i have in for review sicne last week and tis pretty cool though its so extreme the applications can be limited, but damn, nothing like this thing). Reverb can be really hard to deal with unless its more a part of the guitar sound than the guitar in my experience. If comrpession is the elast udnerstood audio processing type then reverb is probably the msot misused effect out there and not just by guitarists. Don't be that guy. Dare to play without reverb or with just effecty reverbs. if you need a little space and the soundman can't give it and the room isn't enough? try a slap or some low timed delays (TC is good at this too but the market is filled with great oions these days both analog and digital).
smoke that over