Thanks for the detailed info - helps a lot.
I emailed APM and they can order the 715 Mak in standard, deluxe or deluxe II configs with a few months wait & 35% deposit, but the prices are high. It worries me that the quality can vary so much. Apparently they come with a zygotest report - I assume that means they passed!
I'll have a look at the SW Mak as you both suggested and think about Intes.
Thanks again.