Thanks for additional suggestions. Budget (as always!) a factor.
Waiting for an AZ4 to arrive in the post second hand and am excited to give it a go with my 90/910 refractor. I'm maxing out with that at x150 taking in to account seeing etc so expecting tracking to be less of a problem. Will resurrect this post if/when I get a Skymax and see if I'm going to end up with an EQ mount.
Based on last nights frantic half hour viewing session before the clouds arrived, I ended up in three different places in the garden to avoid trees, sheds and a chimney stack to make the most of Jupiter, Saturn and a quick look at the moon. Lumping an EQ around might be tricky but a rough north/polar alignment may do it.