hi hg and I are probably a little bias towards the h28 but there great little boats the compass h28 is actualy 29.1ft long.
Before I bought my boat I was looking at the compass 28/29 and also missed out on a walker h28 I liked a few weeks later my boat appeared on the market the compass nz h28
I think the h28 is a better live aboard option more room inside and out
my h28 does seems to be faster than local compass 28/29`s
there not the fastest boast but more than adequate for cruising mine points well to.
there easy to handle good for single handing
i don't live aboard but do stay aboard in comfort and im 6"2 tall. I would like to take it up to north Queensland one day and i would have no issues with comfort except for maybe showers on deck
a lot will depend on the condition of the boat especial the motor ,sails, systems ect
the walker and compass h28 would be worth a look at they are both very capable boat's if maintained and can be found around the same price as a nice compass 29
heres a link to some passages undertaken by the nz h28
http://h28.org.nz/index.php/main-2-passages2 brothers apparently sailed one around the world years ago too
a link to 2 different Tasman crossings on u tube