@phatkaw, thanks for the vote of confidence.
@johnfajitas, that depends on what you're looking to accomplish overall.
Generally speaking, the smaller the rope, the less forgiving your mistakes are. Conversely, the larger the rope, the less packable it is and weighs more.
The smaller the rope, the easier it is to pull up and over a tree limb as I find it doesn't hang up as much. It's also much lighter, packs into a smaller space and being more flexible, easier to manipulate. The drawbacks are that it can be harder to climb since you don't have as much rope to grip with your free hand, your mechanical ascender choices are more limited as are your mechanical descenders and your hitch selections, namely accessory cord diameter needs to be more closely matched. There are ways to overcome these drawbacks but you do need to be more selective.
Larger diameter ropes are just about opposite. If I had no concerns with weigh, userability once at hunting height or packability, I'd have 11mm rope without question. It's the easiest to climb and has the most compatible accessories. The drawbacks have already been mentioned, namely what to do with it once at height and carrying it in. Again, these too can be overcome.
9-10mm seems to be the sweet spot in balancing all of this out overall. If I had to walk miles and climb tall trees, I'd opt for 8mm like Resc Tech or Ultra Tech and understand my equipment limitations. My 50' of Resc Tech packs smaller and is lighter than my 40' of C-IV but the C-IV is more forgiving to my climbing style. Chiefly, I am fully confident in climbing the C-IV blindfolded (or at least in the dark) doing alot by feel. The Resc Tech requires that I pay more attention to my equipment and the flow of the rope through that equipment. Certainly not a deal breaker but since I plan on climbing/rappelling in the dark, it is a consideration.
My advice to someone such starting out would be to buy 10mm HTP and practice in your yard with as many different techniques as you're able. Once you decide on what your climbing, hunting and rappelling style is, decide then if you can/need to reduce the diameter and weight.