XLI is a particularly alluring ETF idea for April, posting average gains in excess of 4% since 1999, according to CXO data. XLF’s average April return since 1999 is just under 4%.

The worst of the nine SPDRs in April, usually, is the Consumer Staples Select Sector SPDR (NYSEArca: XLP), but that does not mean the largest staples ETF is destined to decline. XLP is coming off a month in which it betrayed its seasonal reputation. The ETF is usually the worst of the nine SPDRs in March, but found its way to a 2.2% gain last month. [Warning Signs from Staples ETFs]

XLP could still merit consideration this month as it has averaged April gains north of 1%, according to CXO, and flips to being the best SPDR in May.

Industrial Select Sector SPDR