Below is a comparison of four laptops often considered in the less price and routine usage segment.
Note- ThinkBook S145 is often confused with Lenovo IdeaPad S145. I’ll clarify that ThinkBook E14 is less commonly used than ThinkPad E14. So I’ll treat it as the business oriented E14 line.
I will compare them across key dimensions and design and build quality and performance and display and connectivity and ports and battery and upgradability and value/target use cases. I will suggest which might be a better fit depending on use.
Design
ThinkPad E14 is the strongest in terms of build quality: it is tested for MIL SPEC durability and has a business chassis and better hinge and more robust construction.
Avita Liber V14 stands out in terms of lightness and sleek design. It is meant to balance portability with aesthetics.
Aspire 3 is more utilitarian: decent build for the price, but compromises (e.g., screen brightness, flex, less premium material) are common in this class.
IdeaPad S145 is an entry-level laptop where build is acceptable for casual use but not for rugged demands. It tends to have more flex, simpler materials, etc.
In short: for durability, E14 is best; for portability and style, Liber V14 shines; for budget, Aspire 3 / S145 do a credible job.
Performance
ThinkPad E14 can be equipped with capable Intel CPUs (up to Core i7 in many versions) and in some variants might support discrete or more performant graphics options.
Avita Liber V14 with the 10th Gen i5 (or Ryzen 5 in some variants) handles everyday productivity, multitasking, and light creative tasks smoothly.
Acer Aspire 3 in its typical mid-tier configs (e.g., Ryzen or low-end Intel) is modest: good for documents, browsing, media, but not for heavy workloads. PCWorld describes it as “modestly spec’d” for everyday tasks. Also, its battery life is mediocre, which may affect sustained performance.
IdeaPad S145 is more of a basic productivity machine; you’ll see variants with Celeron / Pentium in lower tiers. It’s not aimed at high performance but basic tasks.
Display
Liber V14 has a 14″ FHD IPS / anti-glare display, which is a strength in this segment.
Aspire 3 typically uses 15.6″ FHD panels, but reviews mention its screen is among the weaker areas (dull, low brightness, limited color). LaptopMag says its display is “not very colorful or very bright.”
E14 tends to offer better display options (IPS, anti-glare) in its business class, which helps for professional work.
S145 in many variants uses TN or budget panels with lower contrast / viewing angles; good enough for casual use but not ideal for color-sensitive tasks.
Thus, for viewing comfort and color, Liber V14 or E14 tend to lead; Aspire 3 and S145 lag behind.
Connectivity
ThinkPad E14 often offers more in the way of business-friendly ports: Ethernet, more USB, possibly docking / Thunderbolt in newer models.
Liber V14 is decent: it includes USB-C (with PD and display out), USB 3.0 ports, HDMI, SD card reader, etc.
Aspire 3 also offers a good port selection in its class (HDMI, USB-C, USB-A, etc.).
S145 has basic but limited ports — will cover essentials (USB, HDMI) but fewer premium or modern ones.
If you need multiple peripheral connections or docking capability, E14 is safer; Liber V14 and Aspire 3 are fairly balanced; Lenovo ideapad S145 specs is minimal.
Battery Life
Liber V14 promises up to ~10 hours in ideal usage according to its specs.
In practice, reviews note that for moderate usage, Liber V14 does well in the ultraportable segment.
Aspire 3, in budget tests, often falls short: LaptopMag measured ~6h56m for web surfing — not bad for the price, but not top-tier.
E14 in business use can often last a full workday depending on configuration, especially with optimized settings, though heavy tasks will reduce that. (Exact numbers vary by generation.)
S145 being entry-level, battery life is moderate; lighter tasks perhaps will stretch it, but it may struggle under heavier workloads.
Thus, if battery long term and portability are priorities. Liber V14 is strong and Thinkbook E14 is reliable and Aspire 3 / S145 are acceptable but less exceptional..
Conclusion
If I had to pick a single best all rounder among them. It would be ThinkPad E14 in a well specified variant because of its balance performance and durability and expandability and business features. If mobility and lightness are more important than ruggedness. Avita Liber V14 is a great alternative as long as you accept limited upgrade flexibility.
However, the best ultimately depends on your priorities portability and battery and upgradability and price. If you tell me your budget and preferred weight limit or key usage. I can narrow down which of these is the optimal choice for your case.
