MagmaCollection vs Smalltalk collection

[Hilaire Fernandes]

In the situation of small read-only collection (<200) are there any good 
reason to not just use a standard Collection as OreredCollection and an 
appropriate ReadStrategy?
I am in a situation where for some collection I need to search for 
collection elements from very long string attribute (>100 characters), a 
learning competency description.

Hilaire