Thule Roundtrip XT

• Pros:
  • Durable and reliable for international travel
  • Ample space for bike, helmet, shoes, and other items
  • Built-in sturdy stand for convenient packing and unpacking
  • Accepted as a standard checked bag by some airlines
  • Still available online, even though discontinued
• Cons:
  • Some concerns about airlines' acceptance
  • Discontinued, so availability may be limited
• User Comment: "I’ve been traveling with; a Thule Roundtrip XT. So far with the handful of international trips this thing’s been on with me it’s been phenomenal."

Dakine Snow Roller

• Pros:
  • Great capacity for gear
  • Able to pack down into a small roll when unloaded
• Cons:
  • Fabric material may not hold shape well
• User Comment: "I had the Dakine bag and was a great bag with a lot of capacity."

DB Brand Bags (Specifically Journey bags)

• Pros:
  • Superior quality and functionality
  • Rolls up into a compact size when not in use
• Cons:
  • Comparatively higher price
• User Comment: "Db Journey bags leave all other bags in the dust."

Other Recommendations

• Kulkea: Offers quality bags with good deals on last year's models
• Scicon Aerocomfort 3.0: A road bag for bike transportation
• User Comment: "Going to Spain next week with my S5. Bought a Scicon Aerocomfort 3.0 road bag."

In summary, the Thule Roundtrip XT is praised for its durability, ample space, and convenient features, although there are concerns about airline acceptance and availability since it has been discontinued. The Dakine Snow Roller is highlighted for its capacity but may have issues with maintaining shape. On the other hand, the DB Brand Bags, particularly the Journey line, are highly recommended for their superior quality and compact storage. Other alternatives like Kulkea and Scicon Aerocomfort 3.0 are also mentioned as good options for travel bags.