My findings so far.
Ease of use
AG Ultra Deep Shine goes on easy as Super Resin, and Carlack 68 ( AIO?). Whether you leave it to dry or remove straight away, it does not come off as easy as the other two. Even when applied thickly though there is little dusting. When applied nice and thin there is none. It seemed hard to remove in a few areas though and required more than just a wipe with a MF, to remove it was more like Autoglym Super Glym which is SRP with no Cut which I have found to be less user friendly than AG SRP. UDS is the same sort of consitancy to the SRP but blue in colour akin to the AG Glass polish, with a fruity type smell, less chemical like than other AG products.
Both the Carlack and SRP where easy on and off.
Results.
AG Ultra Deep Shine, had the wettest look, and did what it said on the tin and did fill swirls. It had little or no cut to it though and was not aggressive IMO. Suface after felt oily to the touch more akin to using a hand glaze such as Megs #7.
AG SRP most aggressive in the Polishing stakes, you could feel and hear the bite on slightly weatherd paint which the other two didn't. Surface after felt a middle man to the Carlack and Deep Shine. Felt slighty less oily but not such a clean smooth finish of the Carlack. Swirls seemed more visable than the Deeps shined area but better hidden than the carlack. Slightly more wet looking than the Carlack.
Carlack 68, which is said to be akin to Klasse all in one. Easily cleaned the suface the best. Yellow megs hand pad turned dirty in colour on both cars tested, easily shifted more ingrained dirt than the other AG pair. Left a very slick, and reflective suface smooth to the touch with out the oily feel off the other pair. Highlighted the imperfections and did nothing to hide anything. Seemed to show the true colour off the paint where there other two tended to slightly darken the paint with there wetter look. Did not seem like an aggressive polish could not feel any abbrassive bite like with the SRP.
Apperance wise side by side on two panels divided into three, all three looked very alike the two AG areas where a little wetter looking and slightly darker in colour and the Carlack was more true to the colour but clearer and more reflective.
I think I would be tempted to Use the Carlack to clean and then the SRP to Polish after. The appreance of the SRP is hardly any different to the Ultra Deep shine and its easier to use. Not had a chance to try the them on Dark paints to compare which is where AG is trying to sell the UDS for. had no AG Supreme to test against but from memory I think the UDS is very alike, esp in its removal.
On swirl free paint I would go for the Carlack alone I feel. Tried some yesterday on a swirl free panel and it looked great.
Will check results off the durabilty off the three.