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Hi Rob,
One thing you need to remember is that 5053 is a fairly sparse low concentration class and and low surface brightness cluster that in a 10" looks quite a bit different to M53. M53 looks more like a "real" globular. Both will show some resolution, M53 decidedly more and it will also appear somewhat bigger.
With the other two, it is interesting to see how the background changes quite a bit from one to the other. There is a quite noticable (from a dark sky) dark nebula just to the south of the cluster (Barnard 298). Neither of these two will exhibit much in the way of resolution -- just a grainy texture and maybe the odd star in the brighter one (-22)
Best of luck with them -- you should have few problems with these two in 10" and probably 8" as well.
Best,
Les D
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