never ridden a 230 (unfortunately...) but i do have a good number of hours on an MXZ and VLX (thanks warner & brett). My takes -
we put the bow triangle sac in the bow of the MXZ when riding, i think one of the CIE guys here says not to do that... but i think we had a total of somewhere around 4k in the boat and the wake was AWESOME. I've seen, and other people have said you cant get the 350 in it, its underpowered with that motor in it (to the tune of not being able to get on plane underpowered). The weird thing about those rear seats is they dont have gas-assist shocks on them... its annoying because they wont stay open by themselves.
the VLX wake i really like too, and the cockpit is definitely larger than the MXZ. We'll ride with the bow triangle in that boat sometimes too, and since both boats have the bow rendered unusable, the VLX is much larger in real-world use.
maliview vs LINC... IMO LINC wins.
engines - the VLX will be fine with the 350 in it. if the 230 has the 6.0L it will probably burn more gas... i still cant believe PCM doesnt have an LS3 based engine (6.2L) which will burn much less gas than a L96-based engine (their 409 & 450)
demo, demo, demo, demo. for me, it would come down to which wake i liked best & dealer support