I can speak for the 3035. I think of it as the "SM57" of the LDC family. Cheap, might not be the perfect choice for any given source, but it never sounds bad. It's a fairly neutral mic, which is why I think it sounds pleasant on any source. Depending on the style of music, a good engineer could definitely do an entire album using only 3035's and get respectable results.
I've outgrown mine, although I've still kept it around the last few years and included it in every vocal mic shootout. It's always gotten positive remarks during the shoot-outs, and every singer has liked the sound of it (it really does sound usable/good on every voice). It hasn't been chosen in a few years, but that's only because I have some really nice LDC's that wind up edging it out.
You'll like it on acoustic guitar and vocals, and I've gotten some great sounds on drums and bass instruments out of it as well.
BTW - you're probably going to outgrow that Focusrite soon. You should be considering a mic pre as your next future purchase. I've got a Focusrite Platinum around that I haven't used in several years (it's probably going on the bay soon). It's a really boring pre, although I did use it for voice-overs for a while (with the 3035 coincidentally) and got decent results.
-Lance