The problem with cheap (MLC) netbook SSDs is indeed the write speed. FlashFire is a software solution that should solve the issue, basically it's using system memory as write cache:
- FlashFire is software for Solid-State Drives
- FlashFire uses host RAM to enhance random write performance of a SSD
- FlashFire is especially useful for the system using low-end SSDs
I know it helps a great deal with certain Eee PC models that shipped with poor performing MLC SSDs (e.g. the Eee PC 900/16), even speeds up the SLC SSD performance in my Eee PC 701. Try it first before spending money on upgrading a rather cheap netbook.
Here is a ATTO Disk Benchmark comparison, without FlashFire:
Of course, there are many more tweaks to improve the performance of such SSDs, over at eeeuser.com is a quite informative thread dealing with the matter.