>>446158I have both the Scarp 1 (with both nylon and mesh inner tents and crossing poles) and an old Cloudburst 2 that is no longer sold. The Squall 2 is very similar but requires a pair of trekking poles.
The Cloudburst is a great tent for two ... very light and packs small. Handles most weather very well with good sight selection and awareness of the expected weather. Only drawback I see is the single wall design. Expect condensation. I keep a tiny pack towel with me to wipe the interior at the first sign of condensation. After that, it rarely forms in an amount that will cause any problem.
The Scarp 1 (and by extension the 2) is a great tent system. Depending on the season and expect weather, I can choose which inner to carry and decide if I need the crossing poles foradditional support and/or free standing setup. It is also possible to carry the outer tent with no inner whatsoever, effectively creating a fully enclosed tarp.
If you're buying your first ultralight tent, start with the Squall. It's inexpensive, simple to setup and will handle most situations well. There's little to go wrong. The Scarp system is more involved and I see many opportunities for the less experienced to have problems.