I am studying for the General and trying to get down the wide array of frequency bands. Quite confusing on what mode at what frequency. And of course the FCC doesn't make it simple as they use both Frequency and Meters. So when the questions popup I have to try and remember the formula for which is which.
I don't know if I would favor HF and or VHF just because of the Learning slope.
I have been on 2 meters for several years, ( all be it over 10 years only a smattering of attempts) and I did try Packet With a local county sponsored Emergency Drill. This is when I got MY first Laptop, An HP and another Ham instructed me on the wiring connections of the Packet to Handheld to Computer. It was a Good experience.
But back to your question. I would have a hard time deciding with which to go with. Mainly as I am not to limber any more to erect any type of antenna or system. (I do have a mickey mouse long wire for my Yeasu FRG100). I did Build my own Jpole, and have a couple of mobile antennas.
My biggest concern is the enormous cost of a Transceiver for Either HF or VHF.
Of course it would have to be used equipment, however that sometimes is a pig in a poke. Even from Local Hams( I know as I bought several Tube testers and each one has problems that wernt mentioned in the sale to me, Even a TV-7 that was mislabeled as a TV-7 /D/U when it was just the first model which I wasn't looking for.
Putting that aside, I would like to get on to the Lower frequencies, Just because of Modes and distant contacts.
I do have a good software program hamtst14.exe. it covers the tech, General and Extra.
It also has a secondary POPUP for the Bands Allocation .
Having to learn all the terminology such as MUF, scatter-back, DSP vs Analog filters, Q reports and requests, radiation patterns, antenna designs and polarization. On and On.
But I will get there, so there's a lot to learn for me just to make an objective decision on preferences.
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I'm a Science Thinker, Radio Tinkerer, and all around good guy. Just ask Me!