A LTL machine can throw issues at you also, the ideal machine should be within about 50mm + or - from clt.
It is not that hard to design and build a machine close to CLT, why some manufacturers dont is beyond me, apart from the fact that to get it CLT usually the seating needs to be high so this makes it harder to get into, so they stick with the low seat, for costumer appeal, but they forget to say ohhh its easy to get into but it will kill you in a heart beat with the right conditions, this is very aplicable to a make of machine you didnt mention.
The HTL becomes an issue when if you can visualise the following.
The only thing stoping the machnie from rolling forward in the sky, is the drag of the rotors, then all you need is a thermal/wind shear to take that drag away for a split second, and over it will go, and it will get to an unrecoverable situation in less than 1 second, especially at high speed with a high power setting on the motor.
A CLT should hold a similar path even with the rotor drag removed as above, and the rotors will grab again before things go pear shaped.
A very LTL machine can cause other issues.
This is dependant on a lot of variables of course, but it has happened alot to a particular type of machine, even killing instructors, mostly in the US, but they have burning holes in the ground all over the world, cant remember one in OZ.
Hope that helps :thumb_up: