Best vacuum for getting up to the edges

[SilkieAndMoonface]

Can anyone recommend a vacuum for getting right up to the edges of the room? I've found dust etc tends to accumulate there but our current vacuum (Gtech Air ram K9) doesn't get right up to the edge and it's driving DH and me mad. Even worse, we live in an old house that's shifted over time and so the skirting isn't completely flat against the floor everywhere, so the dust gets under it. We used to have a robot vac that had little side brushes that would get under the skirting and brush everything out, which was great, but it broke quite quickly and we were left a bit disillusioned with them (recommendations for good robo vacs also gratefully accepted!).

We need something with great suction as we have a dog that sheds. Preferably cordless as that does make it less faff to vacuum, but I'll take corded if necessary.

Can anyone advise?

My Handheld Dyson is great at going up to edges - comes with a variety of attachments so you can get so much.

Ah following. I am very disenchanted with my vacuum (Shark Rocket)

DD has long hair and we have 2 cats - so her hair gets trapped round the rollers, their hair fills the cannister very quickly (easy to empty though)

It always always deposits a scattering of grit onto the carpet once it's switched off , no matter how I try- I leave it running a while, I hold it beater side up, I hold it over a bin. Nope .

It doesn't do edge-to-edge either , but I use a rubber brush ( Brush Buddy from Lakeland ) or a rubber broom( JML) for this .
I find the rubber broom is better on carpet for the hair anyway.

Once it goes to Vacuum Heaven I'm on the lookout .
But I cannot decide so not bought one yet .......

Thank you @GrumpyHoonMain. Which model is it, can I ask?

@70isaLimitNotaTarget I can see how a rubber brush would be good for edges. I'm just trying to cut down on the amount of time vacuuming takes - I have to vaccuum downstairs every day due to small house + children + dog, but we're also super super busy all the time. So I really want something that just vacuums the whole floor without me adding another job to my list!

Silkie I only use the rubber brush thingie because my vacuum is so useless

I see people estatic about Shark and I think "Mine must be a Goldfish"

My dear cats manage to wedge at least half a pound of fur right at the edges.
Beige carpet + black cats = not a good look .
(Carpet is old but good quality. Cats been here a year and like to shred things. No new carpet until they are too old to bother )