> Any suggestions from a lightweight stand point.
> Vasque Ice 9000
> La Sportiva Makalau
Bob, I get the sense that you want a pair of "all mountain" boots to cover diverse types of climbing.
There are probably no boots on the market, however, that will serve both general mountaineering (including hiking/snowshoeing approaches and glacier walking, or "French-technique" flat-footing up steep slopes) and ice climbing or other techniques requiring the use of front pointing.
For general mountaineering, you need a boot that is as flexible as possible in the ankle cuff.
For approaches and glacier walking, you need a boot with some rocker or flexibility in the sole.
For ice climbing and front pointing you need a boot with a very stiff sole.
For multi-day climbs where you spend day after day in snow, you need a waterproof boot, especially in very cold conditions. For day climbs, a water-resistant synthetic or leather boot is usually sufficient.
For winter day climbing you need an insulated single boot, for winter multi-day climbing you need a double boot.
Lots to think about! I'll give you my recommendations base on what I use in various scenarios - and keep in mind that I fit Scarpa and La Sportiva very well, so these boots tend to be my primary choices. All of them are crampon compatible.
3-season general mountaineering/ice climbing boot: La Sportiva Trango S
The Trango S now has an upgrade: the Trango S Evo, which is waterproof, and I recommend the latter for snow and ice. I've used this boot successfully in the past few years on multi-day glacier / steep snow / alpine ice climbs.
Winter single insulated boot. Scarpa Freney; this season I upgraded to the lighter Scarpa Freney XT.
I've worn this in combination with neoprene overboots on Rainier in the fall, by themselves on just about any day or single push climb where temperatures are above zero, and are my primarily ice climbing boot for a day at the "crags".
Winter Double Insulated Boot. Dynafit MLT4 with aftermarket (Intuition) boot liners.
I bought this boot because most of my cold winter climbs are made with approaches on skis, and I ski a Dynafit randonee setup. These are my boot of choice for winter on Rainier, summer mountaineering above 5000m, or spring in Alaska. With the stock liners, it's fine down to zero, but with the Intuition liner upgrade, I'm OK down to minus 10 or so. Colder than that and I pair them with neoprene overboots. I've owned Lowa Civettas, Koflach Expe, and Scarpa Inverno/Alphas, and these Dynafits have been the most comfortable "expedition" boot I've owned from a hiking/walking/general mountaineering standpoint. Unfortunately, I believe they are now discontinued, and if I had to buy anew, I'd probably go with Scarpa Alphas.
If I had one boot that I needed to do everything from Rainier in the summer to mountaineering on Ecuador's volcanoes to NE winter ice climbing, I'd probably get a pair of good fitting double plastic boots, simply because they are foolproof, warm, waterproof, and they front point well, and then recognize that as you gain experience and specialize, you'll want different footwear for different scenarios.