I simultaneously disagree and don't understandIMO if you want to do something to help improve your mobility and can only make room for one then front squats > high bar. If your just looking for something a little different then high bar will get you moving through a greater rom then low bar, and will hit things differently. I have really started to enjoy fronties especially once getting the grip right.
A complex movement actually helping someone's mobility is highly dependent on how they are set up and what their limitations are. Both high bar and front squats can be paused at the bottom to help mobilise into a good position, along with the benefits of greater knee and hip flexion. Typically, front squats require more ankle ROM than high bar squats.
We have to be careful not to decide something is the be all and end all just because we've tried it and like it
I thought I'd already replied to this.From my workout this morning
Bit of review
The 40's felt great, the 60's felt mediocore at best and by half way through the 2nd set and the whole of the 3rd i couldnt feel anything in my back as my hamstrings were on fire!
This might be a case of lighter is better while i bring my hammies up to speed so that they can cope and i can feel whats going on with my back.
Feed back please, I have a feeling my odd proportions don't help
Aside from your head position (checking the mirror?), there really isn't much to fix. It might be worth playing with pulling to lower down your torso, but I like to mix up the angle on different rowing variations anyway.
You say that your hammies were burning, but how active were your glutes?